reset.css 文件

body,div,dl,dt,dd,ul,ol,li,h1,h2,h3,h4,h5,h6,pre,code,form,fieldset,legend,input,button,textarea,p,blockquote,th,td { margin:0; padding:0; }
body { background:#fff; color:#555; font-size:14px; font-family: "Arial","Microsoft YaHei","黑体","宋体",sans-serif; }
td,th,caption { font-size:14px; }
h1, h2, h3, h4, h5, h6 { font-weight:normal; font-size:100%; }
address, caption, cite, code, dfn, em, strong, th, var { font-style:normal; font-weight:normal;}
a { color:#555; text-decoration:none; }
a:hover { text-decoration:underline; }
img { border:none; }
ol,ul,li { list-style:none; }
input, textarea, select, button { font:14px "Arial","Microsoft YaHei","黑体","宋体",sans-serif; }
table { border-collapse:collapse; }
html {overflow-y: scroll;}

.clearfix:after {content: "."; display: block; height:0; clear:both; visibility: hidden;}
.clearfix { *zoom:1; }/*公共类*/
.fl { float:left}
.fr {float:right}
.al {text-align:left}
.ac {text-align:center}
.ar {text-align:right}
.hide {display:none}

reset.css 文件

原文：https://www.cnblogs.com/langqq/p/9510750.html