*,
::before,
::after{
    margin: 0;
    padding: 0;

    -webkit-tap-highlight-color: transparent;/*清除点击默认的高亮效果*/

    -webkit-box-sizing: border-box;/*以你的border开始计算你的宽度*/
    
}

body{
    font-size: 14px;
    font-family: 'PingFangSC','STHeiti','Microsoft YaHei','Helvetica','Arial',sans-serif;/*第二个是手机的一个默认的字体*/
    color: #000; 
    background:#fff;
}
body *{
    max-height: 999999px;
}

a{
    text-decoration: none;
    color: #333;
    
}
i{
    font-style: normal;
}
ul{
    list-style: none;
}

input,textarea{
    border: none;
    resize: none;
    outline: none;/*清除选中效果*/

    -webkit-appearance: none;/*清楚浏览器默认的样式*/
}
li{
    list-style: none;
}
/*清除浮动*/
.clearfix::before,
.clearfix::after{
    content: ".";
    display: block;
    height: 0;
    line-height: 0;
    visibility: hidden;
    clear: both;
}