.dt_bk1{ width: 1200px; margin: 0 auto; height: 514px; position: relative; background:url(../images/datong_pic2.png) no-repeat center top;}
.dtbl1_left{ width: 360px; height: 514px; position: absolute; top: 0; left: -360px;}
.dtbl1_right{ width: 360px; height: 514px; position: absolute; top: 0; right: -360px;}
.nr{ padding: 75px 0 0 78px;}
.dt_bk1 p{ line-height: 30px; font-size: 14px; color: #333333;}
.dt_bk1 p.p_1 a{ color: #ff1919; font-weight: bolder;}
.dt_bk1 p.p_2{ font-weight: bolder; margin: 13px 0 6px 0; font-size: 18px;}
.dt_bk1 p a.a_h{ color: #ff1919; font-weight: bolder;}
.dt_bk1 p span b{ font-size: 18px;}
.dt_bk1 a.a_1{ width: 378px; height: 438px; display: block; position: absolute; top: 74px; right: 90px;}

.dt_bk2{ height: 457px; background:url(../images/datong_pic5.png) no-repeat center top;}
.dtbl2_left{ height: 457px;}
.dtbl2_right{ height: 457px;}
.dt_bk2 .nr{ padding: 220px 0 0 242px; width: 718px; text-align: center;}
.dt_bk2 p{ line-height: 28px;}
.dt_bk2 p.p_3{ margin-top: 32px;}
.dt_bk2 p.p_3 a{ font-weight: bolder; color: #ff1919; text-decoration: underline;}


.dt_bk3{ height: 589px; background:url(../images/datong_pic8.png) no-repeat center top; }
.dtbl3_left{ height: 589px;}
.dtbl3_right{ height: 589px;}
.dt_bk3 .nr{ padding: 261px 0 0 0; text-align: center;}
.dt_bk3 p{ line-height: 36px;}
.dt_bk3 p span{ color: #fff;}
.dt_bk3 a.a_2 { text-indent:-999999px; display: block; width: 152px; height: 52px; background:url(../images/shubiao_4.png) no-repeat 4px 4px; margin: 26px auto 0;  transition: all 0.9s;}
.dt_bk3 a.a_2:hover{ text-indent:-999999px; display: block; width: 148px; height: 52px; background:url(../images/shubiao_2.png) no-repeat 0 0; margin: 26px auto 0; filter:alpha(Opacity=90);-moz-opacity:0.9;opacity: 0.9;transform: scale(1);}
.dt_bk4{ height: 559px; background:url(../images/datong_pic11.png) no-repeat center top;}
.dtbl4_left{ height: 559px;}
.dtbl4_right{ height: 559px;}

.dt_bk5{ height: 552px; background:url(../images/datong_pic14.png) no-repeat center top;}
.dtbl5_left{ height: 552px;}
.dtbl5_right{ height: 552px;}

.dt_bk7{ height: 518px; background:url(../images/datong_pic17.png) no-repeat center top;}
.dtbl7_left{ height: 518px;}
.dtbl7_right{ height: 518px;}
.dt_bk7 .nr{ padding: 126px 0 0 0; text-align: left; width: 780px; margin: 0 auto;}
.dt_bk7 .nr p{ line-height: 28px;}

.dt_bk6{ height: 249px; background:url(../images/datong_picn2.png) no-repeat center top;}
.dtbl6_left{ height: 249px;}
.dtbl6_right{ height: 249px;}