body{min-width:1440px}.banner{height:400px;background-image:url(../img/case/banner.jpg);background-size:cover;background-position:center;font-size:20px;text-align:center;color:#fff}.banner b{display:inline-block;font-size:40px;margin:150px 0 15px}.item-box{height:744px;background-color:#fff}.item-box.bgf5{background-color:#f5f5f5}.item-box.bgfe{background-color:#FEFEFE}.item-box .item{margin:0 auto;height:100%;width:1440px;overflow:hidden;background-size:1440px auto;padding:80px 90px 0;-moz-box-sizing:border-box;box-sizing:border-box;display:-moz-box;display:-ms-flexbox;display:flex}.item-box .item .item-right>b,.item-box .item .item-title{display:inline-block;font-size:30px}.item-box .item.one{background-image:url(../img/case/bg1.jpg)}.item-box .item.two{background-image:url(../img/case/bg2.jpg)}.item-box .item.three{background-image:url(../img/case/bg3.jpg)}.item-box .item .item-title{margin-bottom:60px}.item-box .item .item-content{margin-bottom:20px}.item-box .item .item-left{width:390px}.item-box .item .item-right{width:780px;margin-left:90px}.item-box .item .item-right>b:nth-of-type(2){animation-delay:.1s}.item-box .item .item-right .yellow{color:#FF8900}.item-box .item .item-right .green{color:#64CA78}.item-box .item .item-right .blue{color:#638DFF}.item-box .item .img-box{margin-top:60px}.item-box .item .img-box img{width:380px;animation-duration:1s!important}.item-box .item .img-box img:nth-of-type(2n){animation-delay:.25s}