修改前：在这里插入图片描述
修改后：

::v-deep .el-radio {
  .el-radio__input {
    .el-radio__inner {
      border-radius: 2px;
    }
  }
  .el-radio__input.is-checked .el-radio__inner::after {
    content: '';
    width: 8px;
    height: 3px;
    border: 2px solid white;
    border-top: transparent;
    border-right: transparent;
    text-align: center;
    display: block;
    position: absolute;
    top: 2px;
    left: 1px;
    vertical-align: middle;
    transform: rotate(-45deg);
    border-radius: 0px;
    background: none;
  }
}