fix bug

src/features/mark/MarkBoardKeyBoard.vue

@@ -348,12 +348,13 @@ export default defineComponent({
   overflow: scroll;
 }
 .hide-board {
-  margin-right: -250px;
+  display: none;
 }
 .show-board {
   position: absolute;
   background-color: white;
-  right: 250px;
+  right: 0px;
+  display: block;
 }
 .question {
   min-width: 80px;

src/features/mark/MarkBoardMouse.vue

@@ -217,12 +217,13 @@ export default defineComponent({
   overflow: scroll;
 }
 .hide-board {
-  margin-right: -250px;
+  display: none;
 }
 .show-board {
   position: absolute;
   background-color: white;
-  right: 250px;
+  right: 0px;
+  display: block;
 }
 .question {
   min-width: 80px;

src/features/mark/MarkBoardTrack.vue

@@ -375,12 +375,13 @@ export default defineComponent({
   overflow: scroll;
 }
 .hide-board {
-  margin-right: -250px;
+  display: none;
 }
 .show-board {
   position: absolute;
   background-color: white;
-  right: 250px;
+  right: 0px;
+  display: block;
 }
 .question {
   min-width: 100px;