body,ul,ol,li,p,h1,h2,h3,h4,h5,h6,form,fieldset,table,td,img,div,dl,dt,dd,input{
margin: 0;
padding: 0;
}
body{font-family: "Microsoft YaHei";font-size:12px;}
img{border:none;}
li{list-style:none;}
input,select,textarea{outline:none;}
a{text-decoration:none;}
/* 清除浮动 */
.clearfix:after{content:"";display:block;clear:both;}
.clearfix{zoom:1;}
5.清除默认样式_reset.css
原文地址：https://www.cnblogs.com/stone5/p/8998276.html