kd-aiot-frontend-wt/lib/vue-form-making-v3/src/styles/scrollbar.scss

$scrollbar-size: 6px;

// scrollbar
.fm-form,.fm-dialog{
  * {
    scrollbar-color: var(--el-scrollbar-bg-color) var(--el-fill-color-light);
  }
  
  ::-webkit-scrollbar {
    width: $scrollbar-size;
    // -webkit-appearance: none;
  }
  
  ::-webkit-scrollbar:horizontal {
    height: $scrollbar-size;
  }
  
  ::-webkit-scrollbar-track {
    border-radius: 10px;
  }
  
  ::-webkit-scrollbar-thumb {
    background-color: rgba(0, 0, 0, 0.15);
    border-radius: 10px;
    transition: all 0.2s ease-in-out;
  
    &:hover {
      cursor: pointer;
      background-color: rgba(0, 0, 0, 0.3);
    }
  }

  .ace_scroller{
    right: 0 !important;
  }

  .ace_scrollbar-v{
    width: $scrollbar-size !important;
    bottom: $scrollbar-size !important;
  }

  .ace_scrollbar-h{
    height: $scrollbar-size !important;
    right: $scrollbar-size !important;
  }
}

.dark {
  .fm-form{
    ::-webkit-scrollbar-thumb {
      background-color: rgba(255, 255, 255, 0.2);
      &:hover {
        background-color: rgba(255, 255, 255, 0.4);
      }
    }
  }
  
}