.main-container{min-height:calc(100vh - 100px);background-image:url(/bg.jpg);background-size:cover;background-position:50%;background-repeat:no-repeat;position:relative;padding-bottom:100px}.main-container:before{content:"";position:absolute;top:0;left:0;right:0;bottom:0;background:rgba(0,0,0,.5);z-index:1}.main-content{position:relative;z-index:2}