#header.header .container-nav{background-color:#111}#header.header .container-nav:before{left:0}#header.header .container-nav:after,#header.header .container-nav:before{background-color:#111;content:"";height:100%;position:absolute;top:0;width:100vw;z-index:-1}#header.header .container-nav:after{left:-100%}