.new_add_task_wrap,
.student_study_warp,
.record_detail_area {
  height: 100vh;

  .task_header,
  .student_study_header,
  .record_detail_header {
    height: 65px;
    background: rgba(7, 15, 25, 1);
    padding: 0 20px;
  }

  .task_header {
    position: relative;
    line-height: 65px;

    .header_btn,
    .header_title {
      color: #fff;
      line-height: 65px;
    }

    .header_title {
      font-size: 16px;
      font-weight: bold;
      text-align: center;
    }

    .header_btn {
      position: absolute;
      line-height: 32px;
      top: 18px;

      &:last-child {
        right: 30px;
      }
    }
  }

  .split-pane-area,
  .pane_right_area {
    position: relative;
  }

  .student_study_header,
  .record_detail_header {
    position: relative;

    .avator_nicker,
    .study_quit,
    .study_name {
      color: #fff;
      line-height: 65px;
    }

    .avator_nicker,
    .study_quit {
      display: inline-block;
      vertical-align: top;
    }

    .student_nicker {
      margin-left: 10px;
    }

    .student_img {
      width: 30px;
      height: 30px;
    }

    .study_quit {
      float: right;
    }

    .study_name {
      position: absolute;
      left: 0;
      right: 0;
      bottom: 0;
      top: 0;
      text-align: center;
      font-size: 16px;
      font-weight: bold;
    }
  }
}

.add_editor_list_area {
  background: #fff;
  padding: 0 20px;
  margin: 0;

  .add_editor_item {
    display: inline-block;
    height: 56px;
    line-height: 56px;
    box-sizing: border-box;
    margin-right: 30px;
    border-bottom: 2px solid transparent;
    transition: all .3s;
    cursor: pointer;

    .item-span {
      color: #666;
      font-size: 16px;
    }

    &.active {
      border-bottom-color: #5091FF;

      .item-span {
        color: #5091FF;
      }

    }
  }
}

.comp_ctx {
  overflow-y: auto;
  margin-right: 0 !important;
}

.split-pane-area,
.split-pane-left {
  .ant-tabs-nav-wrap {
    padding: 0 20px;
  }

  .ant-tabs-bar {
    margin: 0;
  }

  .ant-form-item-control {
    line-height: 1;
  }

  .editor_area,
  .prev_area {
    height: auto;
  }
}

.Resizer {
  position: relative;
  background: #111c24;
  z-index: 1;
  -moz-box-sizing: border-box;
  -webkit-box-sizing: border-box;
  box-sizing: border-box;
  -moz-background-clip: padding;
  -webkit-background-clip: padding;
  background-clip: padding-box;
}

.Resizer:hover {
  -webkit-transition: all 2s ease;
  transition: all 2s ease;
}

.Resizer.horizontal {
  height: 4px;
  margin: -5px 0;
  border-top: 5px solid rgba(255, 255, 255, 0);
  border-bottom: 5px solid rgba(255, 255, 255, 0);
  cursor: row-resize;
  width: 100%;
}

.Resizer.horizontal:hover {
  border-top: 5px solid rgba(0, 0, 0, 0.5);
  border-bottom: 5px solid rgba(0, 0, 0, 0.5);
}

.Resizer.vertical {
  width: 4px;
  cursor: col-resize;
}

.Resizer.disabled {
  cursor: not-allowed;
}

.Resizer.disabled:hover {
  border-color: transparent;
}

.outer-split-pane {
  &>.Resizer {
    position: relative;

    &::before,
    &::after {
      position: absolute;
      right: -7px;
      top: 50%;
      transition: opacity, background .3s;
    }

    &::before {
      content: '';
      border-radius: 50%;
      background: rgba(235, 235, 235, .3);
      width: 24px;
      height: 24px;
      // font-size: 12px;
    }

    &::after {
      content: '\e712';
      font-family: 'iconfont';
      transform: scale(.7);
      color: #666;
      margin-top: -2px;
      right: -7px;
      opacity: .3;
    }

    &:hover {
      &::before {
        background: rgba(235, 235, 235, 1);
      }

      &::after {
        opacity: 1;
      }
    }
  }
}