.head { margin-right: auto; margin-left: auto; background: #1D71B7; width: 100%; height: 75px; padding-top: 10px; }
body { background: url(../images/ld_top.jpg) no-repeat center top; }
.w1080 { margin: 0px auto; width: 1080px; }
.logo_pic { height: 68px; width: 250px; float: left; margin-right: 20px; }
.head_nav { float: left; width: 810px; }
.head_nav ul li { width: 100px; float: left; height: 52px; display: block; padding-top: 15px; text-align: center; line-height: 2em; background: url(../images/sy_navbg_ulli.png) no-repeat right center; }
.head_nav ul li a { font-size: 18px; line-height: 2em; color: #FFF; text-decoration: none; font-family: "微软雅黑"; font-weight: normal; width: 88px; height: 40px; text-align: center; }
.head_nav ul li a:hover { color: #F00; }
.head_dh { width: 100%; background: url(../images/pd_01.png) no-repeat center top; margin: 2px auto 15px; height: 135px; }
.head_dh .pd_2 { background: url(../images/ch-bg.png) no-repeat -275px -70px; height: 130px; width: 350px; }
.head_pdtip { height: 130px; width: 1080px; background: #FFF url(../images/ch-photo.png) no-repeat 300px -70px; margin: 2px auto 15px; }
.head_pdtip .pd_1 { background: url(../images/ch-bg.png) no-repeat -275px -70px; height: 130px; width: 350px; display: block; }
.pd_1 img { margin-top: 20px; }
.head_zt_bj01 { background: url(../images/W05.jpg) no-repeat center -100px; width: 100%; margin-right: auto; margin-left: auto; }
.head_zt_bj02 { background: url(../images/W05.jpg) no-repeat center -100px; }