body,button,div,input,label,span{padding:0;margin:0;font-family:"Lantinghei SC","Helvetica Neue","Microsoft YaHei","WenQuanYi Micro Hei","Heiti SC","Segoe UI",Arial,sans-serif}button{cursor:pointer}body{background:#f0f0f0}#main{text-align:center;position:relative;min-height:600px}.footer,.login{position:absolute;left:50%}#logo{margin:30px auto}.login{width:520px;height:520px;background:#fff;top:50%;margin-top:-260px;margin-left:-260px}.login_button{width:410px;height:40px;margin:20px;background:#e78d4a;border:none;font-size:14px;color:#fff}.margin_bg{margin-bottom:50px}.login_button:hover{background:#f1ae7c}.footer{font-size:12px;bottom:2%;margin-left:-83px}