.content{width:970px;margin:0 auto;}
.part1{width:970px;height: 645px;background-color:#e8e8e8;position:relative;}
.part1a{width:485px;height:292px;position:absolute;left:0;background-color:#323232;}
.part1b{width:485px;
position:absolute;right:0;z-index:10;
height: 644px;background:url(../images/isme_img80.jpg) no-repeat center;}
.part1b img,.part2a img{margin:300px 200px;}
.tag{position:absolute;}
.bg01{top:35px;left:40px;}
.bg02{top:105px;left:40px;}
.bg03{top:155px;left:40px;}
.bg04{top:210px;left:40px;}
.bg05{top: 317px;left:0;}
.bg06{top: 612px;left:40px;}
.bg07{top: 536px;left:40px;}
.bg08{top:565px;left:40px;}
.part2{width:970px;height:650px;background-color:#323232;position:relative;margin-top:50px;}
.part2a{width:485px;height:490px;float:left;z-index:20;position:absolute:left:0;background:url(../images/isme_img81.jpg) no-repeat center;}
.part2b{width:485px;height:186px;float:left;background-color:#919191;}
.bg21{top:55px;left:540px;}
.bg22{top:225px;left:530px;}
.bg23{top: 311px;left:550px;}
.bg24{top:380px;left:550px;}
.bg25{top:495px;left:50px;}
.bg26{top:525px;left:50px;}
.bg27{top:585px;left:50px;}
.part3{height:1140px;width:970px;background-color:#e8e8e8;position:relative;margin-top:50px;}
.part3a{width:970px;height:490px;background:url(../images/isme_img82.jpg) no-repeat center;}
.part3a img{margin:200px 450px;}
.bg31{top:30px;left:90px;}
.bg32{top:500px;left:40px;}
.bg33{top: 525px;left:40px;}
.bg34{top: 584px;left:40px;}
.bg35{top:650px;left: 3px;}
.bg36{top:975px;left:50px;}
.bg37{top:1000px;left:50px;}
.bg38{top: 1062px;left:50px;}
.bg39{top:490px;left: 484px;}
.bg301{top:1000px;left:530px;}
.bg302{top:975px;left:530px;}
.bg303{top: 1053px;left:530px;}
.part4{width:970px;height:645px;background-color:#e8e8e8;position:relative;margin-top:50px;}
.part4a{width:485px;height:645px;background:url(../images/isme_img83.jpg) no-repeat center;float:left;z-index:10;}
.part4a img{margin:300px 200px;}
.part4b{width:485px;height:360px;float:left;background-color:#323232;}
.bg41{top:30px;left:520px;}
.bg42{top:150px;left:485px;}
.bg43{top: 185px;left:575px;}
.bg44{top:250px;left:575px;}
.bg45{top:385px;left:525px;}
.bg46{top:385px;left:721px;}
.keep{display:none;}