.why-us .introBox{position:relative}.why-us .introBox >img{position:absolute;top:-5px;left:21%;width:8%}.why-us .introBox >div{position:relative;left:0;top:0;height:350px}.why-us .introBox >div >img{position:absolute;height:calc(100% - 30px);left:50%;top:0;transform:translateX(-50%)}.why-us .introBox >div .itemBox{padding:30px 15px 15px;border:2px solid #309670;position:relative;width:94%;border-radius:5px}.why-us .introBox >div .itemBox strong{position:absolute;width:150px;height:36px;border:2px solid #309670;left:50%;top:0;margin-top:-18px;margin-left:-75px;border-radius:25px;text-align:center;line-height:36px;color:#fff;background:#27c489;font-size:18px}