.main-banner-wrapper img{width:100%}.main-banner-wrapper{width:100%;height:618px;overflow:hidden;position:relative}.main-banner-wrapper::after{content:"";display:block;position:absolute;top:0;left:0;right:0;bottom:0;opacity:.77;background-image:linear-gradient(to bottom,#1e313c,rgba(41,67,81,0.79))}