el-select改下拉箭头

  :deep(.el-cascader) {
    border-radius: 6px;
    .el-input__wrapper {
      border: 0;
      background: rgb(247, 248, 250);
      box-shadow: none;
      svg {
        display: none;
      }
      .el-input__icon:before {
        content: "";
        display: inline-block;
        width: 0;
        height: 0;
        border-left: 5px solid transparent;
        border-right: 5px solid transparent;
        border-top: 5px solid rgb(134, 144, 156);
      }
    }
  }
  :deep(.el-select__wrapper) {
    border: 0;
    background: rgb(247, 248, 250);
    box-shadow: none;
    svg {
      display: none;
    }
    .el-select__caret:before {
      content: "";
      display: inline-block;
      width: 0;
      height: 0;
      border-left: 5px solid transparent;
      border-right: 5px solid transparent;
      border-top: 5px solid rgb(134, 144, 156);
    }
  }