css 默认样式

body,textarea,input,select,option {font-size:12px;color:#333;font-family:Tahoma,Arial,sans-serif;}
h1,h2,h3,h4,h5,h6 {font-size:100%;}
body,h1,h2,h3,h4,h5,h6,blockquote,ol,ul,dl,dd,p,textarea,input,select,option,form {margin:0;}
ol,ul,textarea,input,option,th,td {padding:0;}
table {border-collapse:collapse;}
ol,ul {list-style-type:none;}
.clearfix:before,.clearfix:after {content:‘‘;display:table;}
.clearfix:after {clear:both;}.clearfix {*zoom:1;}
.clear {clear:both;height:0;overflow:hidden;}
a {text-decoration:none;color:#333;}
a,textarea,input{outline:none}
textarea {overflow:auto;resize:none;}
.img img {display:block;}
a img {border:none;}
.z_index{position:fixed;_position:absolute;z-index:999;display:none;}
.pr {position:relative;}.pa {position:absolute;}
.fl {float:left;}.fr {float:right;}
.m980 {margin:0 auto;width:980px;}.t10 {margin-top:10px;}
a:hover{text-decoration:underline}

css 默认样式