.security{padding-top:150px;height:2555px;background:url(../images/security_bg.png) center 49px repeat-x}
.security .security_title{font-size:40px;line-height:52px;font-weight:bold;text-align:center}
.security .security_desc{width:991px;margin:20px auto;font-size:16px;line-height:36px;text-align:center}
.security .security_top20{margin:40px auto 0;width:1200px}
.security .security_main{height:1714px}
.security .security_main div{float:left}
.security .security_main div .security_title{margin-top:22px;text-align:left;font-size:24px;line-height:30px;margin-left:63px;width:472px}
.security .security_main div .security_desc{text-align:left;margin-left:63px;font-size:16px;line-height:30px;width:490px}
.security .security_main div img{margin:0 auto}
.security .security_main .security1{width:100%;height:587px;margin-top:90px}
.security .security_main .security1 .num{background-position:0 -60px}
.security .security_main .security1 p{width:970px}
.security .security_main .security1 img{margin-top:70px;width:894px}
.security .security_main .security2{width:662px;height:485px}
.security .security_main .security2 .num{background-position:-60px -60px}
.security .security_main .security2 img{width:662px;margin-top:50px}
.security .security_main .security3{width:538px;height:485px}
.security .security_main .security3 .num{background-position:-120px -60px}
.security .security_main .security3 img{width:538px;margin-top:30px}
.security .security_main .security4{width:662px;height:625px}
.security .security_main .security4 .num{background-position:-180px -60px}
.security .security_main .security4 img{width:662px;margin-top:35px}
.security .security_main .security5{width:538px;height:625px}
.security .security_main .security5 .num{background-position:-240px -60px}
.security .security_main .security5 img{width:538px;margin-top:65px}
.all_top_list{background:url(../images/security_list_bg.png) no-repeat center top}