element ui 单选 修改为 多选的样式（小√）

/deep/ .el-radio__input.is-checked .el-radio__inner::after {

    content: "";

    width: 8px;

    height: 5px;

    border: 2px solid white;

    border-top: transparent;

    border-right: transparent;

    text-align: center;

    display: block;

    position: absolute;

    top: 1px;

    left: 1px;

    vertical-align: middle;

    transform: rotate(-45deg);

    border-radius: 2px;

    background: none;

}