tmagic-editor/packages/editor/src/theme/sidebar.scss

.m-editor-sidebar {
  height: 100%;

  &.el-tabs--left .el-tabs__header {
    background: $--sidebar-heder-background-color;
    border: 0;

    &.is-left {
      width: 40px;
      margin-right: 0;
    }

    .el-tabs__nav-wrap {
      margin: 0;
    }

    .el-tabs__nav {
      border: 0;
      border-radius: 0;
    }

    .tab-label {
      margin-left: 2px;
    }

    .el-tabs__item.is-left {
      line-height: 15px;
      border: 0;
      height: auto;
      padding: 8px;
      color: rgb(255, 255, 255);
      box-sizing: border-box;

      &.is-left {
        &.is-active {
          background: $--sidebar-content-background-color;
          border: 0;

          i {
            color: #353140;
          }

          .magic-editor-tab-panel-title {
            color: #353140;
          }
        }

        &:first-child {
          border-right: 0;
        }
      }
    }

    i {
      font-size: 25px;
      color: rgba(255, 255, 255, 0.6);

      &:hover {
        color: rgb(255, 255, 255);
      }
    }

    .magic-editor-tab-panel-title {
      font-size: 12px;
      white-space: normal;
    }
  }

  .el-scrollbar {
    height: 100%;
  }

  .el-tree {
    min-height: 100%;
  }

  .fold-icon {
    position: absolute;
    bottom: 8px;
    left: 0px;
    width: 45px;
    padding-left: 8px;
    color: #fff;
    font-size: 32px;
    opacity: 0.8;
    cursor: pointer;

    &:hover {
      background: rgba(0, 0, 0, 0.2);
    }
  }

  .el-tabs__content,
  .el-tab-pane {
    height: 100%;
  }
}