.idea,.idea-box{display:-webkit-box;display:-ms-flexbox;display:flex;-webkit-box-pack:center;-ms-flex-pack:center;justify-content:center;-webkit-box-align:center;-ms-flex-align:center;align-items:center}.idea-box{width:1200px;height:auto;padding:17px 0;-ms-flex-wrap:wrap;flex-wrap:wrap}.tips{width:360px;height:218px}.tips-bg{margin-left:auto;margin-right:auto;width:140px;height:174px;background:url(../img/public.d19ff0a2.png) -885px 0;text-align:center}.tips-text{width:155px;margin:6px auto 0;font-size:14px;font-weight:500}.tips-bg img{width:42px;height:auto;margin-top:30px}.tips-bg div{margin:45px auto 20px;font-size:16px;font-weight:600}.activity{display:-webkit-box;display:-ms-flexbox;display:flex;-webkit-box-pack:center;-ms-flex-pack:center;justify-content:center;-webkit-box-align:center;-ms-flex-align:center;align-items:center;text-align:center}.activity-box{width:1200px;height:680px;-webkit-box-pack:justify;-ms-flex-pack:justify;justify-content:space-between;-webkit-box-direction:normal}.top-left{width:600px;height:183px;position:relative;float:left;margin-top:20px}.mask{position:absolute;top:-15px;left:0;bottom:-15px;right:0;background:rgba(0,0,0,.5);opacity:0}.mask-box-1{margin:3% auto}.mask [class^=mask-box]{width:70%;height:50%}.box-top{width:100%;height:50%;border:3px solid #fff;border-bottom:none;margin-top:35px}.mask-text{color:#fff;font-size:20px;text-align:center}.mask .box-bottom{width:100%;height:50%;border:3px solid #fff;border-top:none}.mask:hover{opacity:.8}.top-right{-webkit-box-orient:vertical;-ms-flex-direction:column;flex-direction:column;width:55%;text-align:center}.flex-box,.top-right{display:-webkit-box;display:-ms-flexbox;display:flex;-webkit-box-pack:justify;-ms-flex-pack:justify;justify-content:space-between;-webkit-box-direction:normal}.right-top{width:100%}.right-left{height:298px;width:48%;position:relative}.mask-box-2{margin:16% auto}.right-bottom{height:364px;width:100%;position:relative;-webkit-box-direction:normal;text-align:center}.mask-box-4{margin:10% auto}.activity-bottom{height:374px;width:1200px}.bottom-left{width:61%;height:100%;position:relative;margin-top:15px}.activity:last-child{margin-top:30px}.bottom-right{width:37%;height:100%;margin-top:15px;position:relative}.mask-box-5{margin:15% auto}