纯css兼容个浏览器input[type='radio']不能自定义样式

//html
 
<div class="remember-account">
      <input type="checkbox">
      <span>记住账号</span>
</div>

//css
.remember-account {
    display: inline-block;
    font-size: 18px;
    color: #fff;
    float: left;
    margin-left: 26px;
}
.remember-account input[type="checkbox"] {
    -webkit-appearance: none;
    outline: none;
    border: none;
    background-color: transparent;
    box-sizing: border-box;
    height: 24px;
    width: 24px;
    cursor: pointer;
    border: 1px solid #fff;
    box-sizing: border-box;
    border-radius: 6px;
    vertical-align: middle;
}
input[type="checkbox"]:checked {
    height: 24px;
    width: 24px;
    background-image: url(../images/login/pick.png);
    background-repeat: no-repeat;
    background-position: 0 0;
    vertical-align: middle;
    border: none;
}
.remember-account span{
    display: inline-block;
}

//html
<div class="remember-account">
    <input type="checkbox">
    <div class="sub-checkbox"></div>
    <span>记住账号</span>
</div>

//css
//增加的样式代码，用/**/注释出来；可对比
.remember-account {
    position: relative;  /*父层*/
    display: inline-block;
    font-size: 18px;
    color: #fff;
    float: left;
    margin-left: 26px;
}
.remember-account input[type="checkbox"] {
    position: absolute;  /*input,相对定位*/
    -webkit-appearance: none;
    outline: none;
    border: none;
    background-color: transparent;
    box-sizing: border-box;
    height: 24px;
    width: 24px;
    cursor: pointer;
    border: 1px solid #fff;
    box-sizing: border-box;
    border-radius: 6px;
    vertical-align: middle;
    opacity: 0; /*透明度为0，隐藏掉input*/
    z-index: 2; /* 比input下面的div,z-index:1大，层叠在最上面，点击时候能点击到input */
    
}
/*用div模拟input的样式*/
.sub-checkbox{
    display: inline-block;
    position: absolute; /*input下面的div,相对定位*/
    -webkit-appearance: none;
    outline: none;
    border: none;
    background-color: transparent;
    box-sizing: border-box;
    height: 24px;
    width: 24px;
    cursor: pointer;
    border: 1px solid #fff;
    box-sizing: border-box;
    border-radius: 6px;
    vertical-align: middle;
    z-index: 1;/* 比input的z-index:2小，层叠在下面面 */
}
/*!!利用伪类的写法+；input选中后，下面的div的样式*/
input[type="checkbox"]:checked + div {
    height: 24px;
    width: 24px;
    background-image: url(../images/login/pick.png);
    background-repeat: no-repeat;
    background-position: 0 0;
    vertical-align: middle;
    border: none;
}
.remember-account span{
    display: inline-block;
    margin-left: 30px;/*因为input和它下面的div都相对定位脱离了文本流，所以不给距离，文字会层叠过去*/
}