.body{background:#f1f3f4}.header{background:#5e6368;box-shadow:0 3px 3px 0 rgba(0,0,0,.5);color:#fff;height:41px;overflow:hidden;position:fixed;top:0;width:100%;z-index:1}.main{flex:1;padding-bottom:20px}.main.no-menu{margin-left:0}@media only screen and (min-width:1280px){.header{height:64px}.main{margin-left:280px}}