/*综合设置*/
body { text-align: center; font-family:SimSun, Arial,sans-serif;margin:0; padding:0; background: #000; font-size:12px; color:#000;line-height:150%;}
div,form,img,ul,ol,li,dl,dt,dd,p{margin:0;padding:0;border:0;}
ul,ol,li{list-style:none;}

a{ text-decoration:none;}
a:hover{ text-decoration:underline;}

.btn_a{width:100px;height:20px;line-height:20px;display:inline-block;text-align:center;color:#333;background:#000;border:1px #333 solid;}
.btn_a:hover{background:#fff;color:#000;text-decoration:none;}