.formula-editor-dialog {
  .el-dialog__header {
    padding: 15px;
    border-bottom: 1px solid #f0f0f0;
  }
  .el-dialog__body {
    padding: 15px;
  }
  .el-dialog__footer {
    padding: 15px;
    border-top: 1px solid #f0f0f0;
  }
}
.formula-editor {
  color: #000;
  .formula-menu {
    .menu-body {
      display: flex;
      justify-content: space-between;
      align-items: stretch;
      margin-bottom: 10px;
    }
    .menu-item-icon {
      background-size: 100% auto;
      background-position: center center;
      background-repeat: no-repeat;
    }

    .menu-item-body {
      width: 86px;
      padding: 5px 10px;
      text-align: center;
      border-radius: 4px;
      background-color: #f0f0f0;
      cursor: pointer;

      &:hover {
        background-color: #e9e9e9;
        color: #29abff;
      }
      .menu-item-icon {
        height: 66px;
      }
    }
  }
  .formula-input {
    border-radius: 5px;
    border: 1px solid #d1d1d1;
    background: #fff;
    height: 100%;
    overflow: hidden;
    height: 150px;
    &.is-focus {
      border-color: #1886fe;
    }
  }

  .formula-preview {
    margin-top: 20px;

    h3 {
      font-size: 16px;
      line-height: 1;
      margin-bottom: 10px;
    }

    .preview-body {
      min-height: 150px;
      border: 1px solid #e9e9e9;
      border-radius: 4px;
      padding: 20px;
      font-size: 20px;
      display: flex;
      // justify-content: center;
      align-items: center;

      overflow: auto;
    }

    svg {
      display: block;
      margin: 0 auto;
    }
  }

  .el-tabs--card > .el-tabs__header .el-tabs__nav {
    border: none;
  }
  .el-tabs--card > .el-tabs__header .el-tabs__item {
    border: 1px solid #fff;
    border-bottom-color: #f0f0f0;

    &.is-active {
      border-top-color: #f0f0f0;
      border-left-color: #f0f0f0;
      border-right-color: #f0f0f0;
      border-bottom-color: #fff;
    }
  }
  .el-tabs--card > .el-tabs__header .el-tabs__item.is-active:first-child {
    border-left: 1px solid #f0f0f0;
  }
}
.menu-popper {
  &.el-popover {
    box-shadow: 0 3px 15px 0 rgba(0, 0, 0, 0.2);
    padding: 0;
  }

  .menu-item-icon {
    background-size: 100% auto;
    background-position: center center;
    background-repeat: no-repeat;
  }
  .submenu {
    color: #000;
    padding: 10px;
    max-height: 500px;
    overflow: auto;

    &-part {
      margin-bottom: 20px;

      > h3 {
        font-size: 16px;
        font-weight: 600;
        line-height: 1;
        margin-bottom: 15px;
      }
    }

    ul {
      margin: 0 -5px;
    }
    li {
      display: inline-block;
      vertical-align: middle;
      width: 50%;
      padding: 0 5px;
      margin-bottom: 10px;
    }
    .submenu-cont {
      padding: 10px;
      border-radius: 4px;
      background-color: #f0f0f0;
      cursor: pointer;

      &:hover {
        background-color: #e9e9e9;
      }

      .menu-item-icon {
        height: 40px;
      }
    }
  }

  .submenu-formula {
    .submenu-cont {
      &-physics_21,
      &-physics_22,
      &-physics_23,
      &-physics_24,
      &-algebra_11,
      &-algebra_12,
      &-algebra_13,
      &-inequality_11,
      &-inequality_12 {
        .menu-item-icon {
          height: 110px;
        }
      }

      &-inequality_13 {
        .menu-item-icon {
          height: 130px;
        }
      }
      &-statistics_15,
      &-statistics_16 {
        .menu-item-icon {
          height: 60px;
        }
      }
    }
  }
  .submenu-array {
    .submenu-cont {
      .menu-item-icon {
        height: 120px;
      }
    }
  }

  .submenu-tool {
    .submenu-cont {
      padding: 10px 5px;

      .menu-item-icon {
        width: 22px;
        height: 12px;
      }
    }
    ul {
      margin: 0 -3px;
    }
    li {
      width: auto;
      min-width: 38px;
      margin-bottom: 6px;
      padding: 0 3px;
    }
  }

  .submenu-greek {
    .submenu-cont {
      &-complement {
        .menu-item-icon {
          height: 22px;
          margin: -5px 0;
        }
      }

      &-mathbbABC,
      &-mathfrakABC,
      &-mathcalABC,
      &-mathrmABC {
        .menu-item-icon {
          height: 22px;
          width: 44px;
          margin: -5px 0;
        }
      }
    }
  }

  .submenu-frac {
    .submenu-cont {
      .menu-item-icon {
        width: 30px;
        height: 30px;
      }

      &-partialb,
      &-cfrac {
        .menu-item-icon {
          width: 80px;
          height: 45px;
        }
      }
      &-cfraca {
        .menu-item-icon {
          width: 160px;
          height: 90px;
        }
      }
    }

    .submenu-part-mod {
      .menu-item-icon {
        width: 80px;
        height: 45px;
        margin: -10px 0;
      }

      .submenu-cont-pmod {
        .menu-item-icon {
          width: 144px;
          height: 45px;
        }
      }
    }
  }
  .submenu-sqrt {
    .submenu-cont {
      .menu-item-icon {
        width: 32px;
        height: 18px;
      }

      &-right,
      &-left {
        .menu-item-icon {
          width: 32px;
          height: 32px;
        }
      }
      &-sideset {
        .menu-item-icon {
          width: 50px;
          height: 50px;
        }
      }
      &-oversetrightarrow,
      &-oversetleftarrow,
      &-xleftarrow,
      &-xrightarrow {
        .menu-item-icon {
          width: 64px;
          height: 36px;
          margin: -6px -5px;
        }
      }
    }
  }
  .submenu-limit {
    .submenu-cont {
      .menu-item-icon {
        width: 50px;
        height: 30px;
      }
    }
  }
  .submenu-trig {
    .submenu-cont {
      .menu-item-icon {
        width: 50px;
        height: 26px;
      }
    }
  }
  .submenu-integral,
  .submenu-sum {
    .submenu-cont {
      .menu-item-icon {
        width: 70px;
        height: 70px;
      }
    }
  }

  .submenu-matrix,
  .submenu-bracket {
    .submenu-cont {
      .menu-item-icon {
        height: 60px;
        width: 100px;
      }
    }
  }
}

.menu-item-tool-bracket-bracket {
  background-image: url("../images/source/tool/bracket/bracket.png");
}

.menu-item-tool-bracket-common-interval {
  background-image: url("../images/source/tool/bracket/common/interval.png");
}

.menu-item-tool-bracket-common-bra {
  background-image: url("../images/source/tool/bracket/common/bra.png");
}

.menu-item-tool-bracket-common-ket {
  background-image: url("../images/source/tool/bracket/common/ket.png");
}

.menu-item-tool-bracket-common-product {
  background-image: url("../images/source/tool/bracket/common/product.png");
}

.menu-item-tool-bracket-common-binom {
  background-image: url("../images/source/tool/bracket/common/binom.png");
}

.menu-item-tool-bracket-bracket-1 {
  background-image: url("../images/source/tool/bracket/bracket/1.png");
}

.menu-item-tool-bracket-bracket-2 {
  background-image: url("../images/source/tool/bracket/bracket/2.png");
}

.menu-item-tool-bracket-bracket-3 {
  background-image: url("../images/source/tool/bracket/bracket/3.png");
}

.menu-item-tool-bracket-bracket-4 {
  background-image: url("../images/source/tool/bracket/bracket/4.png");
}

.menu-item-tool-bracket-bracket-5 {
  background-image: url("../images/source/tool/bracket/bracket/5.png");
}

.menu-item-tool-bracket-bracket-6 {
  background-image: url("../images/source/tool/bracket/bracket/6.png");
}

.menu-item-tool-bracket-bracket-7 {
  background-image: url("../images/source/tool/bracket/bracket/7.png");
}

.menu-item-tool-bracket-bracket-8 {
  background-image: url("../images/source/tool/bracket/bracket/8.png");
}

.menu-item-tool-frac-frac {
  background-image: url("../images/source/tool/frac/frac.png");
}

.menu-item-tool-frac-frac-cfraca {
  background-image: url("../images/source/tool/frac/frac/cfraca.png");
}

.menu-item-tool-frac-frac-frac {
  background-image: url("../images/source/tool/frac/frac/frac.png");
}

.menu-item-tool-frac-frac-tfrac {
  background-image: url("../images/source/tool/frac/frac/tfrac.png");
}

.menu-item-tool-frac-frac-dif {
  background-image: url("../images/source/tool/frac/frac/dif.png");
}

.menu-item-tool-frac-frac-difa {
  background-image: url("../images/source/tool/frac/frac/difa.png");
}

.menu-item-tool-frac-frac-partial {
  background-image: url("../images/source/tool/frac/frac/partial.png");
}

.menu-item-tool-frac-frac-partiala {
  background-image: url("../images/source/tool/frac/frac/partiala.png");
}

.menu-item-tool-frac-frac-nabla {
  background-image: url("../images/source/tool/frac/frac/nabla.png");
}

.menu-item-tool-frac-frac-partialb {
  background-image: url("../images/source/tool/frac/frac/partialb.png");
}

.menu-item-tool-frac-frac-cfrac {
  background-image: url("../images/source/tool/frac/frac/cfrac.png");
}

.menu-item-tool-frac-der-dot {
  background-image: url("../images/source/tool/frac/der/dot.png");
}

.menu-item-tool-frac-der-ddot {
  background-image: url("../images/source/tool/frac/der/ddot.png");
}

.menu-item-tool-frac-der-prime {
  background-image: url("../images/source/tool/frac/der/prime.png");
}

.menu-item-tool-frac-der-primea {
  background-image: url("../images/source/tool/frac/der/primea.png");
}

.menu-item-tool-frac-der-primen {
  background-image: url("../images/source/tool/frac/der/primen.png");
}

.menu-item-tool-frac-mod-bmod {
  background-image: url("../images/source/tool/frac/mod/bmod.png");
}

.menu-item-tool-frac-mod-pmod {
  background-image: url("../images/source/tool/frac/mod/pmod.png");
}

.menu-item-tool-frac-mod-gcd {
  background-image: url("../images/source/tool/frac/mod/gcd.png");
}

.menu-item-tool-frac-mod-lcm {
  background-image: url("../images/source/tool/frac/mod/lcm.png");
}

.menu-item-tool-greek-greek {
  background-image: url("../images/source/tool/greek/greek.png");
}

.menu-item-tool-greek-lower-vartheta {
  background-image: url("../images/source/tool/greek/lower/vartheta.png");
}

.menu-item-tool-greek-lower-iota {
  background-image: url("../images/source/tool/greek/lower/iota.png");
}

.menu-item-tool-greek-lower-kappa {
  background-image: url("../images/source/tool/greek/lower/kappa.png");
}

.menu-item-tool-greek-lower-lambdaa {
  background-image: url("../images/source/tool/greek/lower/lambdaa.png");
}

.menu-item-tool-greek-lower-mu {
  background-image: url("../images/source/tool/greek/lower/mu.png");
}

.menu-item-tool-greek-lower-nu {
  background-image: url("../images/source/tool/greek/lower/nu.png");
}

.menu-item-tool-greek-lower-xia {
  background-image: url("../images/source/tool/greek/lower/xia.png");
}

.menu-item-tool-greek-lower-o {
  background-image: url("../images/source/tool/greek/lower/o.png");
}

.menu-item-tool-greek-lower-pia {
  background-image: url("../images/source/tool/greek/lower/pia.png");
}

.menu-item-tool-greek-lower-varpi {
  background-image: url("../images/source/tool/greek/lower/varpi.png");
}

.menu-item-tool-greek-lower-alpha {
  background-image: url("../images/source/tool/greek/lower/alpha.png");
}

.menu-item-tool-greek-lower-rho {
  background-image: url("../images/source/tool/greek/lower/rho.png");
}

.menu-item-tool-greek-lower-varrho {
  background-image: url("../images/source/tool/greek/lower/varrho.png");
}

.menu-item-tool-greek-lower-sigmaa {
  background-image: url("../images/source/tool/greek/lower/sigmaa.png");
}

.menu-item-tool-greek-lower-varsigma {
  background-image: url("../images/source/tool/greek/lower/varsigma.png");
}

.menu-item-tool-greek-lower-tau {
  background-image: url("../images/source/tool/greek/lower/tau.png");
}

.menu-item-tool-greek-lower-upsilona {
  background-image: url("../images/source/tool/greek/lower/upsilona.png");
}

.menu-item-tool-greek-lower-phia {
  background-image: url("../images/source/tool/greek/lower/phia.png");
}

.menu-item-tool-greek-lower-varphi {
  background-image: url("../images/source/tool/greek/lower/varphi.png");
}

.menu-item-tool-greek-lower-chi {
  background-image: url("../images/source/tool/greek/lower/chi.png");
}

.menu-item-tool-greek-lower-psia {
  background-image: url("../images/source/tool/greek/lower/psia.png");
}

.menu-item-tool-greek-lower-beta {
  background-image: url("../images/source/tool/greek/lower/beta.png");
}

.menu-item-tool-greek-lower-omegaa {
  background-image: url("../images/source/tool/greek/lower/omegaa.png");
}

.menu-item-tool-greek-lower-gammaa {
  background-image: url("../images/source/tool/greek/lower/gammaa.png");
}

.menu-item-tool-greek-lower-deltaa {
  background-image: url("../images/source/tool/greek/lower/deltaa.png");
}

.menu-item-tool-greek-lower-epsilon {
  background-image: url("../images/source/tool/greek/lower/epsilon.png");
}

.menu-item-tool-greek-lower-varepsilon {
  background-image: url("../images/source/tool/greek/lower/varepsilon.png");
}

.menu-item-tool-greek-lower-zeta {
  background-image: url("../images/source/tool/greek/lower/zeta.png");
}

.menu-item-tool-greek-lower-eta {
  background-image: url("../images/source/tool/greek/lower/eta.png");
}

.menu-item-tool-greek-lower-thetaa {
  background-image: url("../images/source/tool/greek/lower/thetaa.png");
}

.menu-item-tool-greek-upper-Gammab {
  background-image: url("../images/source/tool/greek/upper/Gammab.png");
}

.menu-item-tool-greek-upper-Deltab {
  background-image: url("../images/source/tool/greek/upper/Deltab.png");
}

.menu-item-tool-greek-upper-Thetab {
  background-image: url("../images/source/tool/greek/upper/Thetab.png");
}

.menu-item-tool-greek-upper-Lambdab {
  background-image: url("../images/source/tool/greek/upper/Lambdab.png");
}

.menu-item-tool-greek-upper-Xib {
  background-image: url("../images/source/tool/greek/upper/Xib.png");
}

.menu-item-tool-greek-upper-Pib {
  background-image: url("../images/source/tool/greek/upper/Pib.png");
}

.menu-item-tool-greek-upper-Sigmab {
  background-image: url("../images/source/tool/greek/upper/Sigmab.png");
}

.menu-item-tool-greek-upper-Upsilonb {
  background-image: url("../images/source/tool/greek/upper/Upsilonb.png");
}

.menu-item-tool-greek-upper-Phib {
  background-image: url("../images/source/tool/greek/upper/Phib.png");
}

.menu-item-tool-greek-upper-Psib {
  background-image: url("../images/source/tool/greek/upper/Psib.png");
}

.menu-item-tool-greek-upper-Omegab {
  background-image: url("../images/source/tool/greek/upper/Omegab.png");
}

.menu-item-tool-greek-other-hbar {
  background-image: url("../images/source/tool/greek/other/hbar.png");
}

.menu-item-tool-greek-other-imath {
  background-image: url("../images/source/tool/greek/other/imath.png");
}

.menu-item-tool-greek-other-jmath {
  background-image: url("../images/source/tool/greek/other/jmath.png");
}

.menu-item-tool-greek-other-ell {
  background-image: url("../images/source/tool/greek/other/ell.png");
}

.menu-item-tool-greek-other-Re {
  background-image: url("../images/source/tool/greek/other/Re.png");
}

.menu-item-tool-greek-other-Im {
  background-image: url("../images/source/tool/greek/other/Im.png");
}

.menu-item-tool-greek-other-aleph {
  background-image: url("../images/source/tool/greek/other/aleph.png");
}

.menu-item-tool-greek-other-beth {
  background-image: url("../images/source/tool/greek/other/beth.png");
}

.menu-item-tool-greek-other-gimel {
  background-image: url("../images/source/tool/greek/other/gimel.png");
}

.menu-item-tool-greek-other-daleth {
  background-image: url("../images/source/tool/greek/other/daleth.png");
}

.menu-item-tool-greek-other-wp {
  background-image: url("../images/source/tool/greek/other/wp.png");
}

.menu-item-tool-greek-other-mho {
  background-image: url("../images/source/tool/greek/other/mho.png");
}

.menu-item-tool-greek-other-backepsilon {
  background-image: url("../images/source/tool/greek/other/backepsilon.png");
}

.menu-item-tool-greek-other-partial {
  background-image: url("../images/source/tool/greek/other/partial.png");
}

.menu-item-tool-greek-other-eth {
  background-image: url("../images/source/tool/greek/other/eth.png");
}

.menu-item-tool-greek-other-Bbbk {
  background-image: url("../images/source/tool/greek/other/Bbbk.png");
}

.menu-item-tool-greek-other-complement {
  background-image: url("../images/source/tool/greek/other/complement.png");
}

.menu-item-tool-greek-other-circleds {
  background-image: url("../images/source/tool/greek/other/circleds.png");
}

.menu-item-tool-greek-other-S {
  background-image: url("../images/source/tool/greek/other/S.png");
}

.menu-item-tool-greek-other-mathbbABC {
  background-image: url("../images/source/tool/greek/other/mathbbABC.png");
}

.menu-item-tool-greek-other-mathfrakABC {
  background-image: url("../images/source/tool/greek/other/mathfrakABC.png");
}

.menu-item-tool-greek-other-mathcalABC {
  background-image: url("../images/source/tool/greek/other/mathcalABC.png");
}

.menu-item-tool-greek-other-mathrmABC {
  background-image: url("../images/source/tool/greek/other/mathrmABC.png");
}

.menu-item-tool-greek-other-mathrmdef {
  background-image: url("../images/source/tool/greek/other/mathrmdef.png");
}

.menu-item-tool-integral-integral {
  background-image: url("../images/source/tool/integral/integral.png");
}

.menu-item-tool-integral-integral-oint {
  background-image: url("../images/source/tool/integral/integral/oint.png");
}

.menu-item-tool-integral-integral-ointa {
  background-image: url("../images/source/tool/integral/integral/ointa.png");
}

.menu-item-tool-integral-integral-int {
  background-image: url("../images/source/tool/integral/integral/int.png");
}

.menu-item-tool-integral-integral-inta {
  background-image: url("../images/source/tool/integral/integral/inta.png");
}

.menu-item-tool-integral-integral-intb {
  background-image: url("../images/source/tool/integral/integral/intb.png");
}

.menu-item-tool-integral-integral-iint {
  background-image: url("../images/source/tool/integral/integral/iint.png");
}

.menu-item-tool-integral-integral-iinta {
  background-image: url("../images/source/tool/integral/integral/iinta.png");
}

.menu-item-tool-integral-integral-iintb {
  background-image: url("../images/source/tool/integral/integral/iintb.png");
}

.menu-item-tool-integral-integral-iiint {
  background-image: url("../images/source/tool/integral/integral/iiint.png");
}

.menu-item-tool-integral-integral-iiinta {
  background-image: url("../images/source/tool/integral/integral/iiinta.png");
}

.menu-item-tool-integral-integral-iiintb {
  background-image: url("../images/source/tool/integral/integral/iiintb.png");
}

.menu-item-tool-limit-limit {
  background-image: url("../images/source/tool/limit/limit.png");
}

.menu-item-tool-limit-log-exp {
  background-image: url("../images/source/tool/limit/log/exp.png");
}

.menu-item-tool-limit-log-log {
  background-image: url("../images/source/tool/limit/log/log.png");
}

.menu-item-tool-limit-log-lg {
  background-image: url("../images/source/tool/limit/log/lg.png");
}

.menu-item-tool-limit-log-ln {
  background-image: url("../images/source/tool/limit/log/ln.png");
}

.menu-item-tool-limit-bound-min {
  background-image: url("../images/source/tool/limit/bound/min.png");
}

.menu-item-tool-limit-bound-max {
  background-image: url("../images/source/tool/limit/bound/max.png");
}

.menu-item-tool-limit-bound-sup {
  background-image: url("../images/source/tool/limit/bound/sup.png");
}

.menu-item-tool-limit-bound-inf {
  background-image: url("../images/source/tool/limit/bound/inf.png");
}

.menu-item-tool-limit-bound-lim {
  background-image: url("../images/source/tool/limit/bound/lim.png");
}

.menu-item-tool-limit-bound-limsup {
  background-image: url("../images/source/tool/limit/bound/limsup.png");
}

.menu-item-tool-limit-bound-liminf {
  background-image: url("../images/source/tool/limit/bound/liminf.png");
}

.menu-item-tool-limit-bound-dim {
  background-image: url("../images/source/tool/limit/bound/dim.png");
}

.menu-item-tool-limit-bound-ker {
  background-image: url("../images/source/tool/limit/bound/ker.png");
}

.menu-item-tool-limit-lim-lim {
  background-image: url("../images/source/tool/limit/lim/lim.png");
}

.menu-item-tool-limit-lim-limto0 {
  background-image: url("../images/source/tool/limit/lim/limto0.png");
}

.menu-item-tool-limit-lim-limtoinfty {
  background-image: url("../images/source/tool/limit/lim/limtoinfty.png");
}

.menu-item-tool-limit-lim-limtf {
  background-image: url("../images/source/tool/limit/lim/limtf.png");
}

.menu-item-tool-limit-lim-max {
  background-image: url("../images/source/tool/limit/lim/max.png");
}

.menu-item-tool-limit-lim-min {
  background-image: url("../images/source/tool/limit/lim/min.png");
}

.menu-item-tool-matrix-matrix {
  background-image: url("../images/source/tool/matrix/matrix.png");
}

.menu-item-tool-matrix-matrix-align {
  background-image: url("../images/source/tool/matrix/matrix/align.png");
}

.menu-item-tool-matrix-matrix-matrix {
  background-image: url("../images/source/tool/matrix/matrix/matrix.png");
}

.menu-item-tool-matrix-matrix-bmatrix {
  background-image: url("../images/source/tool/matrix/matrix/bmatrix.png");
}

.menu-item-tool-matrix-matrix-pmatrix {
  background-image: url("../images/source/tool/matrix/matrix/pmatrix.png");
}

.menu-item-tool-matrix-matrix-vmatrix {
  background-image: url("../images/source/tool/matrix/matrix/vmatrix.png");
}

.menu-item-tool-matrix-matrix-bigVmatrix {
  background-image: url("../images/source/tool/matrix/matrix/bigVmatrix.png");
}

.menu-item-tool-matrix-matrix-bigBmatrix {
  background-image: url("../images/source/tool/matrix/matrix/bigBmatrix.png");
}

.menu-item-tool-matrix-matrix-leftmatrix {
  background-image: url("../images/source/tool/matrix/matrix/leftmatrix.png");
}

.menu-item-tool-matrix-matrix-rightmatrix {
  background-image: url("../images/source/tool/matrix/matrix/rightmatrix.png");
}

.menu-item-tool-matrix-matrix-case {
  background-image: url("../images/source/tool/matrix/matrix/case.png");
}

.menu-item-tool-sqrt-sqrt {
  background-image: url("../images/source/tool/sqrt/sqrt.png");
}

.menu-item-tool-sqrt-other-grave {
  background-image: url("../images/source/tool/sqrt/other/grave.png");
}

.menu-item-tool-sqrt-other-acute {
  background-image: url("../images/source/tool/sqrt/other/acute.png");
}

.menu-item-tool-sqrt-other-tilde {
  background-image: url("../images/source/tool/sqrt/other/tilde.png");
}

.menu-item-tool-sqrt-other-breve {
  background-image: url("../images/source/tool/sqrt/other/breve.png");
}

.menu-item-tool-sqrt-other-bar {
  background-image: url("../images/source/tool/sqrt/other/bar.png");
}

.menu-item-tool-sqrt-other-vec {
  background-image: url("../images/source/tool/sqrt/other/vec.png");
}

.menu-item-tool-sqrt-other-not {
  background-image: url("../images/source/tool/sqrt/other/not.png");
}

.menu-item-tool-sqrt-other-degree {
  background-image: url("../images/source/tool/sqrt/other/degree.png");
}

.menu-item-tool-sqrt-other-widetilde {
  background-image: url("../images/source/tool/sqrt/other/widetilde.png");
}

.menu-item-tool-sqrt-other-widehat {
  background-image: url("../images/source/tool/sqrt/other/widehat.png");
}

.menu-item-tool-sqrt-other-overleftarrow {
  background-image: url("../images/source/tool/sqrt/other/overleftarrow.png");
}

.menu-item-tool-sqrt-other-overrightarrow {
  background-image: url("../images/source/tool/sqrt/other/overrightarrow.png");
}

.menu-item-tool-sqrt-other-overline {
  background-image: url("../images/source/tool/sqrt/other/overline.png");
}

.menu-item-tool-sqrt-other-underline {
  background-image: url("../images/source/tool/sqrt/other/underline.png");
}

.menu-item-tool-sqrt-other-overbrace {
  background-image: url("../images/source/tool/sqrt/other/overbrace.png");
}

.menu-item-tool-sqrt-other-underbrace {
  background-image: url("../images/source/tool/sqrt/other/underbrace.png");
}

.menu-item-tool-sqrt-other-overset {
  background-image: url("../images/source/tool/sqrt/other/overset.png");
}

.menu-item-tool-sqrt-other-underset {
  background-image: url("../images/source/tool/sqrt/other/underset.png");
}

.menu-item-tool-sqrt-other-stackrelfrown {
  background-image: url("../images/source/tool/sqrt/other/stackrelfrown.png");
}

.menu-item-tool-sqrt-other-overline {
  background-image: url("../images/source/tool/sqrt/other/overline.png");
}

.menu-item-tool-sqrt-other-overleftrightarrow {
  background-image: url("../images/source/tool/sqrt/other/overleftrightarrow.png");
}

.menu-item-tool-sqrt-other-oversetleftarrow {
  background-image: url("../images/source/tool/sqrt/other/oversetleftarrow.png");
}

.menu-item-tool-sqrt-other-oversetrightarrow {
  background-image: url("../images/source/tool/sqrt/other/oversetrightarrow.png");
}

.menu-item-tool-sqrt-other-xleftarrow {
  background-image: url("../images/source/tool/sqrt/other/xleftarrow.png");
}

.menu-item-tool-sqrt-other-xrightarrow {
  background-image: url("../images/source/tool/sqrt/other/xrightarrow.png");
}

.menu-item-tool-sqrt-other-hat {
  background-image: url("../images/source/tool/sqrt/other/hat.png");
}

.menu-item-tool-sqrt-other-check {
  background-image: url("../images/source/tool/sqrt/other/check.png");
}

.menu-item-tool-sqrt-sqrt-sqrt {
  background-image: url("../images/source/tool/sqrt/sqrt/sqrt.png");
}

.menu-item-tool-sqrt-sqrt-sqrtn {
  background-image: url("../images/source/tool/sqrt/sqrt/sqrtn.png");
}

.menu-item-tool-sqrt-superscript-topright {
  background-image: url("../images/source/tool/sqrt/superscript/topright.png");
}

.menu-item-tool-sqrt-superscript-bottomright {
  background-image: url("../images/source/tool/sqrt/superscript/bottomright.png");
}

.menu-item-tool-sqrt-superscript-right {
  background-image: url("../images/source/tool/sqrt/superscript/right.png");
}

.menu-item-tool-sqrt-superscript-left {
  background-image: url("../images/source/tool/sqrt/superscript/left.png");
}

.menu-item-tool-sqrt-superscript-sideset {
  background-image: url("../images/source/tool/sqrt/superscript/sideset.png");
}

.menu-item-tool-sum-sum {
  background-image: url("../images/source/tool/sum/sum.png");
}

.menu-item-tool-sum-cup-cup {
  background-image: url("../images/source/tool/sum/cup/cup.png");
}

.menu-item-tool-sum-cup-cupa {
  background-image: url("../images/source/tool/sum/cup/cupa.png");
}

.menu-item-tool-sum-cup-cupb {
  background-image: url("../images/source/tool/sum/cup/cupb.png");
}

.menu-item-tool-sum-cup-cap {
  background-image: url("../images/source/tool/sum/cup/cap.png");
}

.menu-item-tool-sum-cup-capa {
  background-image: url("../images/source/tool/sum/cup/capa.png");
}

.menu-item-tool-sum-cup-capb {
  background-image: url("../images/source/tool/sum/cup/capb.png");
}

.menu-item-tool-sum-vee-vee {
  background-image: url("../images/source/tool/sum/vee/vee.png");
}

.menu-item-tool-sum-vee-veea {
  background-image: url("../images/source/tool/sum/vee/veea.png");
}

.menu-item-tool-sum-vee-veeb {
  background-image: url("../images/source/tool/sum/vee/veeb.png");
}

.menu-item-tool-sum-vee-wedage {
  background-image: url("../images/source/tool/sum/vee/wedage.png");
}

.menu-item-tool-sum-vee-wedagea {
  background-image: url("../images/source/tool/sum/vee/wedagea.png");
}

.menu-item-tool-sum-vee-wedageb {
  background-image: url("../images/source/tool/sum/vee/wedageb.png");
}

.menu-item-tool-sum-sum-sum {
  background-image: url("../images/source/tool/sum/sum/sum.png");
}

.menu-item-tool-sum-sum-suma {
  background-image: url("../images/source/tool/sum/sum/suma.png");
}

.menu-item-tool-sum-sum-sumb {
  background-image: url("../images/source/tool/sum/sum/sumb.png");
}

.menu-item-tool-sum-prod-prod {
  background-image: url("../images/source/tool/sum/prod/prod.png");
}

.menu-item-tool-sum-prod-proda {
  background-image: url("../images/source/tool/sum/prod/proda.png");
}

.menu-item-tool-sum-prod-prodb {
  background-image: url("../images/source/tool/sum/prod/prodb.png");
}

.menu-item-tool-sum-prod-coprod {
  background-image: url("../images/source/tool/sum/prod/coprod.png");
}

.menu-item-tool-sum-prod-coproda {
  background-image: url("../images/source/tool/sum/prod/coproda.png");
}

.menu-item-tool-sum-prod-coprodb {
  background-image: url("../images/source/tool/sum/prod/coprodb.png");
}

.menu-item-tool-symbol-symbol {
  background-image: url("../images/source/tool/symbol/symbol.png");
}

.menu-item-tool-symbol-arrow-longmapsto {
  background-image: url("../images/source/tool/symbol/arrow/longmapsto.png");
}

.menu-item-tool-symbol-arrow-nearrow {
  background-image: url("../images/source/tool/symbol/arrow/nearrow.png");
}

.menu-item-tool-symbol-arrow-searrow {
  background-image: url("../images/source/tool/symbol/arrow/searrow.png");
}

.menu-item-tool-symbol-arrow-swarrow {
  background-image: url("../images/source/tool/symbol/arrow/swarrow.png");
}

.menu-item-tool-symbol-arrow-nwarrow {
  background-image: url("../images/source/tool/symbol/arrow/nwarrow.png");
}

.menu-item-tool-symbol-arrow-hookleftarrow {
  background-image: url("../images/source/tool/symbol/arrow/hookleftarrow.png");
}

.menu-item-tool-symbol-arrow-hookrightarrow {
  background-image: url("../images/source/tool/symbol/arrow/hookrightarrow.png");
}

.menu-item-tool-symbol-arrow-rightleftharpoons {
  background-image: url("../images/source/tool/symbol/arrow/rightleftharpoons.png");
}

.menu-item-tool-symbol-arrow-iff {
  background-image: url("../images/source/tool/symbol/arrow/iff.png");
}

.menu-item-tool-symbol-arrow-leftharpoonup {
  background-image: url("../images/source/tool/symbol/arrow/leftharpoonup.png");
}

.menu-item-tool-symbol-arrow-rightharpoonup {
  background-image: url("../images/source/tool/symbol/arrow/rightharpoonup.png");
}

.menu-item-tool-symbol-arrow-leftharpoondown {
  background-image: url("../images/source/tool/symbol/arrow/leftharpoondown.png");
}

.menu-item-tool-symbol-arrow-rightharpoondown {
  background-image: url("../images/source/tool/symbol/arrow/rightharpoondown.png");
}

.menu-item-tool-symbol-arrow-gets {
  background-image: url("../images/source/tool/symbol/arrow/gets.png");
}

.menu-item-tool-symbol-arrow-to {
  background-image: url("../images/source/tool/symbol/arrow/to.png");
}

.menu-item-tool-symbol-arrow-longleftarrowa {
  background-image: url("../images/source/tool/symbol/arrow/longleftarrowa.png");
}

.menu-item-tool-symbol-arrow-longrightarrowa {
  background-image: url("../images/source/tool/symbol/arrow/longrightarrowa.png");
}

.menu-item-tool-symbol-arrow-uparrowa {
  background-image: url("../images/source/tool/symbol/arrow/uparrowa.png");
}

.menu-item-tool-symbol-arrow-downarrowa {
  background-image: url("../images/source/tool/symbol/arrow/downarrowa.png");
}

.menu-item-tool-symbol-arrow-updownarrowa {
  background-image: url("../images/source/tool/symbol/arrow/updownarrowa.png");
}

.menu-item-tool-symbol-arrow-leftrightarrowa {
  background-image: url("../images/source/tool/symbol/arrow/leftrightarrowa.png");
}

.menu-item-tool-symbol-arrow-Uparrowb {
  background-image: url("../images/source/tool/symbol/arrow/Uparrowb.png");
}

.menu-item-tool-symbol-arrow-Downarrowb {
  background-image: url("../images/source/tool/symbol/arrow/Downarrowb.png");
}

.menu-item-tool-symbol-arrow-Updownarrowb {
  background-image: url("../images/source/tool/symbol/arrow/Updownarrowb.png");
}

.menu-item-tool-symbol-arrow-longleftrightarrowa {
  background-image: url("../images/source/tool/symbol/arrow/longleftrightarrowa.png");
}

.menu-item-tool-symbol-arrow-Leftarrow {
  background-image: url("../images/source/tool/symbol/arrow/Leftarrow.png");
}

.menu-item-tool-symbol-arrow-Longleftarrowb {
  background-image: url("../images/source/tool/symbol/arrow/Longleftarrowb.png");
}

.menu-item-tool-symbol-arrow-Rightarrow {
  background-image: url("../images/source/tool/symbol/arrow/Rightarrow.png");
}

.menu-item-tool-symbol-arrow-Longrightarrowb {
  background-image: url("../images/source/tool/symbol/arrow/Longrightarrowb.png");
}

.menu-item-tool-symbol-arrow-Leftrightarrowb {
  background-image: url("../images/source/tool/symbol/arrow/Leftrightarrowb.png");
}

.menu-item-tool-symbol-arrow-Longleftrightarrowb {
  background-image: url("../images/source/tool/symbol/arrow/Longleftrightarrowb.png");
}

.menu-item-tool-symbol-arrow-mapsto {
  background-image: url("../images/source/tool/symbol/arrow/mapsto.png");
}

.menu-item-tool-symbol-binary-setminus {
  background-image: url("../images/source/tool/symbol/binary/setminus.png");
}

.menu-item-tool-symbol-binary-star {
  background-image: url("../images/source/tool/symbol/binary/star.png");
}

.menu-item-tool-symbol-binary-ast {
  background-image: url("../images/source/tool/symbol/binary/ast.png");
}

.menu-item-tool-symbol-binary-cup {
  background-image: url("../images/source/tool/symbol/binary/cup.png");
}

.menu-item-tool-symbol-binary-cap {
  background-image: url("../images/source/tool/symbol/binary/cap.png");
}

.menu-item-tool-symbol-binary-sqcup {
  background-image: url("../images/source/tool/symbol/binary/sqcup.png");
}

.menu-item-tool-symbol-binary-sqcap {
  background-image: url("../images/source/tool/symbol/binary/sqcap.png");
}

.menu-item-tool-symbol-binary-vee {
  background-image: url("../images/source/tool/symbol/binary/vee.png");
}

.menu-item-tool-symbol-binary-wedge {
  background-image: url("../images/source/tool/symbol/binary/wedge.png");
}

.menu-item-tool-symbol-binary-circ {
  background-image: url("../images/source/tool/symbol/binary/circ.png");
}

.menu-item-tool-symbol-binary-plus {
  background-image: url("../images/source/tool/symbol/binary/plus.png");
}

.menu-item-tool-symbol-binary-bullet {
  background-image: url("../images/source/tool/symbol/binary/bullet.png");
}

.menu-item-tool-symbol-binary-oplus {
  background-image: url("../images/source/tool/symbol/binary/oplus.png");
}

.menu-item-tool-symbol-binary-ominus {
  background-image: url("../images/source/tool/symbol/binary/ominus.png");
}

.menu-item-tool-symbol-binary-odot {
  background-image: url("../images/source/tool/symbol/binary/odot.png");
}

.menu-item-tool-symbol-binary-oslash {
  background-image: url("../images/source/tool/symbol/binary/oslash.png");
}

.menu-item-tool-symbol-binary-otimes {
  background-image: url("../images/source/tool/symbol/binary/otimes.png");
}

.menu-item-tool-symbol-binary-bigcirc {
  background-image: url("../images/source/tool/symbol/binary/bigcirc.png");
}

.menu-item-tool-symbol-binary-diamonda {
  background-image: url("../images/source/tool/symbol/binary/diamonda.png");
}

.menu-item-tool-symbol-binary-uplus {
  background-image: url("../images/source/tool/symbol/binary/uplus.png");
}

.menu-item-tool-symbol-binary-bigtriangleup {
  background-image: url("../images/source/tool/symbol/binary/bigtriangleup.png");
}

.menu-item-tool-symbol-binary-minus {
  background-image: url("../images/source/tool/symbol/binary/minus.png");
}

.menu-item-tool-symbol-binary-bigtriangledown {
  background-image: url("../images/source/tool/symbol/binary/bigtriangledown.png");
}

.menu-item-tool-symbol-binary-lhd {
  background-image: url("../images/source/tool/symbol/binary/lhd.png");
}

.menu-item-tool-symbol-binary-rhd {
  background-image: url("../images/source/tool/symbol/binary/rhd.png");
}

.menu-item-tool-symbol-binary-unlhd {
  background-image: url("../images/source/tool/symbol/binary/unlhd.png");
}

.menu-item-tool-symbol-binary-unrhd {
  background-image: url("../images/source/tool/symbol/binary/unrhd.png");
}

.menu-item-tool-symbol-binary-amalg {
  background-image: url("../images/source/tool/symbol/binary/amalg.png");
}

.menu-item-tool-symbol-binary-wr {
  background-image: url("../images/source/tool/symbol/binary/wr.png");
}

.menu-item-tool-symbol-binary-dagger {
  background-image: url("../images/source/tool/symbol/binary/dagger.png");
}

.menu-item-tool-symbol-binary-ddagger {
  background-image: url("../images/source/tool/symbol/binary/ddagger.png");
}

.menu-item-tool-symbol-binary-times {
  background-image: url("../images/source/tool/symbol/binary/times.png");
}

.menu-item-tool-symbol-binary-div {
  background-image: url("../images/source/tool/symbol/binary/div.png");
}

.menu-item-tool-symbol-binary-pm {
  background-image: url("../images/source/tool/symbol/binary/pm.png");
}

.menu-item-tool-symbol-binary-mp {
  background-image: url("../images/source/tool/symbol/binary/mp.png");
}

.menu-item-tool-symbol-binary-triangleleft {
  background-image: url("../images/source/tool/symbol/binary/triangleleft.png");
}

.menu-item-tool-symbol-binary-triangleright {
  background-image: url("../images/source/tool/symbol/binary/triangleright.png");
}

.menu-item-tool-symbol-binary-cdot {
  background-image: url("../images/source/tool/symbol/binary/cdot.png");
}

.menu-item-tool-symbol-other-because {
  background-image: url("../images/source/tool/symbol/other/because.png");
}

.menu-item-tool-symbol-other-therefore {
  background-image: url("../images/source/tool/symbol/other/therefore.png");
}

.menu-item-tool-symbol-other-dots {
  background-image: url("../images/source/tool/symbol/other/dots.png");
}

.menu-item-tool-symbol-other-cdots {
  background-image: url("../images/source/tool/symbol/other/cdots.png");
}

.menu-item-tool-symbol-other-vdots {
  background-image: url("../images/source/tool/symbol/other/vdots.png");
}

.menu-item-tool-symbol-other-ddots {
  background-image: url("../images/source/tool/symbol/other/ddots.png");
}

.menu-item-tool-symbol-other-forall {
  background-image: url("../images/source/tool/symbol/other/forall.png");
}

.menu-item-tool-symbol-other-exists {
  background-image: url("../images/source/tool/symbol/other/exists.png");
}

.menu-item-tool-symbol-other-nexists {
  background-image: url("../images/source/tool/symbol/other/nexists.png");
}

.menu-item-tool-symbol-other-Finv {
  background-image: url("../images/source/tool/symbol/other/Finv.png");
}

.menu-item-tool-symbol-other-neg {
  background-image: url("../images/source/tool/symbol/other/neg.png");
}

.menu-item-tool-symbol-other-prime {
  background-image: url("../images/source/tool/symbol/other/prime.png");
}

.menu-item-tool-symbol-other-emptyset {
  background-image: url("../images/source/tool/symbol/other/emptyset.png");
}

.menu-item-tool-symbol-other-infty {
  background-image: url("../images/source/tool/symbol/other/infty.png");
}

.menu-item-tool-symbol-other-nabla {
  background-image: url("../images/source/tool/symbol/other/nabla.png");
}

.menu-item-tool-symbol-other-triangle {
  background-image: url("../images/source/tool/symbol/other/triangle.png");
}

.menu-item-tool-symbol-other-Box {
  background-image: url("../images/source/tool/symbol/other/Box.png");
}

.menu-item-tool-symbol-other-Diamondb {
  background-image: url("../images/source/tool/symbol/other/Diamondb.png");
}

.menu-item-tool-symbol-other-bot {
  background-image: url("../images/source/tool/symbol/other/bot.png");
}

.menu-item-tool-symbol-other-top {
  background-image: url("../images/source/tool/symbol/other/top.png");
}

.menu-item-tool-symbol-other-angle {
  background-image: url("../images/source/tool/symbol/other/angle.png");
}

.menu-item-tool-symbol-other-measuredangle {
  background-image: url("../images/source/tool/symbol/other/measuredangle.png");
}

.menu-item-tool-symbol-other-sphericalangle {
  background-image: url("../images/source/tool/symbol/other/sphericalangle.png");
}

.menu-item-tool-symbol-other-surd {
  background-image: url("../images/source/tool/symbol/other/surd.png");
}

.menu-item-tool-symbol-other-diamondsuit {
  background-image: url("../images/source/tool/symbol/other/diamondsuit.png");
}

.menu-item-tool-symbol-other-heartsuit {
  background-image: url("../images/source/tool/symbol/other/heartsuit.png");
}

.menu-item-tool-symbol-other-clubsuit {
  background-image: url("../images/source/tool/symbol/other/clubsuit.png");
}

.menu-item-tool-symbol-other-spadesuit {
  background-image: url("../images/source/tool/symbol/other/spadesuit.png");
}

.menu-item-tool-symbol-other-flat {
  background-image: url("../images/source/tool/symbol/other/flat.png");
}

.menu-item-tool-symbol-other-natural {
  background-image: url("../images/source/tool/symbol/other/natural.png");
}

.menu-item-tool-symbol-other-sharp {
  background-image: url("../images/source/tool/symbol/other/sharp.png");
}

.menu-item-tool-symbol-relation-less {
  background-image: url("../images/source/tool/symbol/relation/less.png");
}

.menu-item-tool-symbol-relation-more {
  background-image: url("../images/source/tool/symbol/relation/more.png");
}

.menu-item-tool-symbol-relation-equal {
  background-image: url("../images/source/tool/symbol/relation/equal.png");
}

.menu-item-tool-symbol-relation-le {
  background-image: url("../images/source/tool/symbol/relation/le.png");
}

.menu-item-tool-symbol-relation-ge {
  background-image: url("../images/source/tool/symbol/relation/ge.png");
}

.menu-item-tool-symbol-relation-equiv {
  background-image: url("../images/source/tool/symbol/relation/equiv.png");
}

.menu-item-tool-symbol-relation-ll {
  background-image: url("../images/source/tool/symbol/relation/ll.png");
}

.menu-item-tool-symbol-relation-gg {
  background-image: url("../images/source/tool/symbol/relation/gg.png");
}

.menu-item-tool-symbol-relation-doteq {
  background-image: url("../images/source/tool/symbol/relation/doteq.png");
}

.menu-item-tool-symbol-relation-prec {
  background-image: url("../images/source/tool/symbol/relation/prec.png");
}

.menu-item-tool-symbol-relation-succ {
  background-image: url("../images/source/tool/symbol/relation/succ.png");
}

.menu-item-tool-symbol-relation-sim {
  background-image: url("../images/source/tool/symbol/relation/sim.png");
}

.menu-item-tool-symbol-relation-preceq {
  background-image: url("../images/source/tool/symbol/relation/preceq.png");
}

.menu-item-tool-symbol-relation-succeq {
  background-image: url("../images/source/tool/symbol/relation/succeq.png");
}

.menu-item-tool-symbol-relation-simeq {
  background-image: url("../images/source/tool/symbol/relation/simeq.png");
}

.menu-item-tool-symbol-relation-approx {
  background-image: url("../images/source/tool/symbol/relation/approx.png");
}

.menu-item-tool-symbol-relation-subset {
  background-image: url("../images/source/tool/symbol/relation/subset.png");
}

.menu-item-tool-symbol-relation-supset {
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.menu-item-formula-chemistry-chemistry_4 {
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