.head-bj{padding-left: 15px;
    padding-right: 15px;
    padding-top: 6vh;
    padding-bottom: 6vh;
    margin-top: 0;
    background-image:url(../image/bj.jpg);background-repeat: no-repeat;
    background-size: cover;
    background-attachment: scroll;
    background-position: center center;text-align:center;}
	@media only screen and (max-width: 992px)
	{
		.head-bj{min-height: 100px;}
	}
	.main_title{font-size:24px;font-weight:normal;font-style:normal;color:#000;vertical-align:bottom;    width: 1170px;
    margin: 0px auto;
    border-bottom: 1px solid #333;
    padding-bottom: 10px;
    padding-top: 15px;}
