通用样式设置

*,::after,::before{    margin: 0;    padding: 0;    /*盒子模型*/    box-sizing: border-box;    -webkit-box-sizing: border-box;    /*字体*/    font-family: ‘微软雅黑‘, sans-serif;    /*取消默认点击高亮效果*/    -webkit-tap-highlight-color: transparent;}

/*去除默认的样式*/ol,ul{    list-style: none;}input{    border-style: none;    /*移除iOS原生显示样式*/    -webkit-appearance: none;}/*去掉 a 标签的下划线*/a{    text-decoration: none;}.f_l{    float: left;}.f_r{    float: right;}/*清楚浮动*/.clear_fix::before,.clear_fix::after{    content: ‘‘;    display: block;    height: 0;    line-height: 0;    clear: both;    visibility: hidden;}

原文地址：https://www.cnblogs.com/chzlh/p/8857913.html