html,body{}.gg{width:100%;}
.content_main{margin-top: 104px;}
.contain{width:800px;margin:0 auto;}
.con_title{font-size:16px;height:16px;line-height:16px;margin-bottom:20px;font-weight:300;color: #333}
.gg_con_midd{background:#fff;padding:100px; font-size: 18px;}

.con_title a{
	color:#228bff;
}
.con_title a:hover{color:#4ea2ff}
.gg_con_midd .p{
	text-align:center;	
	}
.gg_con_midd p a{
	display:inline-block;
	height:30px;
	line-height:30px; 
	text-decoration:underline;
	}
.gg_con_midd button{
	width: auto;
    height: 38px;
    color: #fff;
    background: #228bff;
    font-size: 16px;
    border: 1px solid #228bff;
    border-radius: 4px;
}

.gg_con_midd button:hover{
    background: #66aefd;
}
.height_30{
	line-height:30px;
	font-size: 20px;
	}
.gg_con_midd p a:hover{color:#228bff;}
.gg_con_midd p img{
	margin:0 auto;
	display:block;
	margin-bottom:30px;
	}
.common_footer{
	    position: absolute;
    bottom: 0;
}