常用的css

body,div,dl,dt,dd,ul,ol,li,h1,h2,h3,h4,h5,h6,pre,form,fieldset,input,select,option,textarea,p,blockquote,th,td,table,tr,td{padding: 0; margin: 0;}
body {font-family:"宋体",Arial,Helvetica,sans-serif; font-size:13px; background:url(../images/body_bg.gif) repeat-x;}
fieldset,img {border: 0;}
ul,li{list-style:none;}
h1,h2,h3,h4,h5,h6{font-weight: normal; font-size: 100%;}
.clear{clear:both;}
a{text-decoration:none; color:#000000;}
a:hover{ text-decoration:underline;}
.clear{clear:both;}