.top { width: 100%;position: fixed; top: 0px;z-index:999;}
.top_bg img { width: 100%; display: block;}
.mxstop { width: 100%;position: fixed; top: 0px;z-index:999;}
.mxstop_bg img { width: 100%; display: block;}
.nav_bg { height: 70px;  background:#015293 ; overflow: hidden;}
.nav_bg li { float: left; width: 33%; text-align: center; height: 35px; line-height: 35px; border-bottom: 1px solid #00467e;color:#fff; font-size:14px;}
.nav_bg li a { display:block; color: #fff;font-size:14px;}
.nav_bg li a:hover { display:block; color: #fff;font-size:14px;}
.top_hg { height: 160px;}
.mxstop_hg { height: 160px;}