试卷预览调整

src/styles/base.scss

@@ -969,9 +969,22 @@ body {
 .preview-paper-dialog {
   .el-dialog {
     width: 1000px;
+    height: 100%;
+    position: relative;
   }
   .el-dialog__body {
     background-color: #f0f4f9;
+    position: absolute;
+    top: 57px;
+    bottom: 0;
+    left: 0;
+    right: 0;
+    overflow: auto;
+  }
+  .el-dialog__header {
+    position: absolute;
+    z-index: 999;
+    width: 100%;
   }
   .el-dialog__footer {
     display: none;