.commerceBox,.commerceBox .banner{width:100%}.commerceBox .banner>img{width:100%;height:auto;vertical-align:middle}.commerceBox .about{width:100%;height:285px;background:url(https://obs.51jianmo.com/jmyd/resources/img/activity/about_09.png) 50% no-repeat;background-size:cover}.commerceBox .jmyd{width:100%;background:url(https://obs.51jianmo.com/jmyd/resources/img/activity/content_09.png) 50% no-repeat;background-size:cover;height:430px}.commerceBox .content{width:100%;background:#091b37;padding:35px 0 73px;min-width:1220px}.commerceBox .content>img{display:block;margin:auto;width:1200px;height:auto}.commerceBox .contract{width:100%;height:200px;background:url(https://obs.51jianmo.com/jmyd/resources/img/activity/contract_09.png) 50% no-repeat;background-size:cover}