reset
/* 公用清零 */
body,h1,h2,h3,h4,h5,h6,textarea,select,p,ul,dl,dd,ol,pre,input,th,td{ margin:0px; padding:0px; font-family:"微软雅黑"; }
em{ font-style:normal; }
li{ list-style:none; }
a{ text-decoration:none; }
img{ border:none; vertical-align:top; }
table{ border-collapse:collapse; }
textarea{ resize: none; overflow: auto; }
/* 请浮动 */
.clear { zoom:1; }
.clear:after{ content:""; display:block; clear:both; }