@media(min-width:801px){
  .exercise-layout>.answer-sheet{
    display:flex;
    flex-direction:column;
    max-height:calc(100vh - 112px);
    overflow:hidden;
  }
  .exercise-layout>.answer-sheet .sheet-head,
  .exercise-layout>.answer-sheet .sheet-legend,
  .exercise-layout>.answer-sheet .sheet-tip{
    flex:0 0 auto;
  }
  .exercise-layout>.answer-sheet .sheet-grid{
    min-height:0;
    overflow-y:auto;
    overscroll-behavior:contain;
    align-content:start;
    padding:2px 5px 8px 2px;
    scrollbar-width:thin;
    scrollbar-color:#c9c5d7 transparent;
  }
  .exercise-layout>.answer-sheet .sheet-grid::-webkit-scrollbar{width:6px}
  .exercise-layout>.answer-sheet .sheet-grid::-webkit-scrollbar-thumb{border-radius:6px;background:#c9c5d7}
  .exercise-layout>.answer-sheet .sheet-grid::-webkit-scrollbar-track{background:transparent}
}