/*================基本样式重置================*/
html,body,div,ul,ol,li,dl,dt,dd,h1,h2,h3,h4,h5,h6,p,img,span,i,a,em,strong,b,input,textarea { margin:0; padding:0; }
h1,h2,h3,h4,h5,h6,b,strong,i,em { font-size:12px; font-weight:normal; }
html, body { height:100%;}
body { font-size:12px; font-family:微软雅黑; }
li { list-style:none; }
a,img,input { border:none; }
a { text-decoration:none; outline:none; }
a:focus,input:focus { outline:0 none;}
textarea { resize:none; font-size:12px;} /*去掉火狐和谷歌浏览器的Textarea改变尺寸大小功能*/

/*========定义通用样式========*/
.hide { display:none;}
.clear { clear:both;}
.fl { float:left;}
.fr { float:right;}
.clearfix:after { content:" "; display:block; clear:both; height:0; }
.clearfix { zoom:1;}
a .opacity { filter:alpha(opacity=100); opacity:1; -moz-opacity:1; } 
a:hover .opacity { filter:alpha(opacity=80); opacity:0.8; -moz-opacity:0.8; }
.maincontent{ width:1000px; margin:0 auto; }

.pt100{ padding-top:100px; }

.dn{ display:none; }
.ht100{ height:100px; }