.common-nav > .listNav > li:nth-child(1) .child, .common-nav > .listNav > li:nth-child(2) .child, .common-nav > .listNav > li:nth-child(3) .child{width:39rem!important;}

.common-nav > .listNav > li > a{padding:2.5rem 1rem}
  .about-banner .youshi li .box{padding: 0 0.8rem !important;
  font-size: 1.4rem !important;}