input[type=radio]美化

input[type="radio"]+span::before {
    content: "a0"; /*不换行空格*/
    display: inline-block;
    vertical-align: middle;
    font-size: .12rem;
     .22rem;
    height: .22rem;
    margin-right: .1rem;
    border-radius: 50%;
    border: 1px solid #CCCCCC;
    text-indent: .15rem;
    line-height: 1;
    margin-top: -.05rem;
}
input[type="radio"]:checked + span::before {
    background-color: #186DC8;
    background-clip: content-box;
    padding: .02rem;
     .16rem;
    height: .16rem;
}
input[type="radio"] {
    position: absolute;
    clip: rect(0, 0, 0, 0);
}