.topbg{ background:#0d59a7;}
.xxsp{ background:url(/images/img_11.png) no-repeat; background-position:bottom;}
.tzgg{ background:url(/images/img_18.png) no-repeat;}
.tzggts{ background:url(/images/title_25.jpg) no-repeat top center;} 
.xxyw{ background:url(/images/img_13.png) no-repeat;background-position:bottom;}