.at-panel-mask {
  position: fixed;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  background: #f1f1f1;
  .at-panel {
    display: flex;
    position: absolute;
    top: 15px;
    right: 15px;
    bottom: 15px;
    left: 15px;
    flex-direction: column;
    background: #fff;
    border-radius: 6px;
    box-shadow: 0 2px 8px 0 #DCDCDC;
    .at-panel-header {
      position: relative;
      margin: 10px 15px 0;
      padding: 5px 0;
      font-size: 20px;
      line-height: 30px;
      border-bottom: 1px solid #ddd;
      .at-panel-close {
        position: absolute;
        right: 15px;
        top: 10px;
        font-size: 20px;
        color: #ccc;
        cursor: pointer;
        transition: all .3s linear;
        &:hover {
          transform: rotate(180deg) scale(1.2);
          color: #999;
        }
        &:active {
          color: #F56C6C;
        }
      }
    }
    .at-panel-body {
      flex: 1;
      overflow: auto;
      padding: 0 15px 15px;
    }
  }
}