/**
    * 单选框自定义样式
    **/
    input[type=radio]{
        /*去除浏览器默认样式*/
        -webkit-appearance: none;
        -moz-appearance: none;
        appearance: none;
        /*自定义样式*/
        position: relative;
        display: inline-block;
        vertical-align: top;
        width: 20px;
        height: 20px;
        border: 1px solid #00bfff;
        outline: none;
        cursor: pointer;
        /*设置为圆形，看起来是个单选框*/
        -webkit-border-radius: 20px;
        -moz-border-radius: 20px;
        border-radius: 20px;
    }
 
    /**
    * 单选框 选中之后的样式
    **/
    input[type=radio]:after{
        content: '';
        position: absolute;
        width: 12px;
        height: 12px;
        display: block;
        left: 0;
        top: 0;
        right: 0;
        bottom: 0;
        margin: auto;
        background: #00bfff;
        -webkit-border-radius: 12px;
        -moz-border-radius: 12px;
        border-radius: 12px;
        -webkit-transform: scale(0);
        -moz-transform: scale(0);
        transform: scale(0);
        /*增加一些动画*/
        -webkit-transition : all ease-in-out 300ms;
        -moz-transition : all ease-in-out 300ms;
        transition : all ease-in-out 300ms;
    }
    input[type=radio]:checked:after{
        -webkit-transform: scale(1);
        -moz-transform: scale(1);
        transform: scale(1);
    }