移动web开发清除默认样式设置

/*reset css*/*,::before,::after{    margin:0;    padding:0;    /*清除移动端默认的点击高亮效果*/    -webkit-tap-highlight-color:transparent;    /*设置以边框开始计算宽度*/    -webkit-box-sizing:border-box;    box-sizing:border-box;}body{    font-size:14px;    font-family:"Microsoft YaHei",sans-serif;/*设备默认字体*/    color:#333;}a{    color:#333;    text-decoration:none;}a:hover{    text-decoration:none;}ul,ol{    list-style:none;}input{    border:none;    outline:none;    /*清除移动端默认的表单样式*/    -webkit-appearance:none;}/*common css*/.f_left{    float:left;}.f_right{    float:right;}.clearfix::before,.clearfix::after{    content:"";    height:0;    line-height:0;    display:block;    visibility:hidden;    clear:both;}