html{ height: 100%; } body{ min-height: 100%; display: flex; flex-direction: column; } .main{ flex-grow: 1; display: flex; flex-direction: column; & > .row{ width: 100%; flex-grow: 1; @include breakpoint(medium){ display: flex; } } } .layout-wrapper{ display: flex; flex-grow: 1; @include clearfix; position: relative; } .layout-nav{ max-width: 340px; flex-shrink: 0; @include breakpoint(mediumlarge down){ position: absolute; top: 0; bottom: 0; transform: translateX(-100%); transition: transform .3s; z-index: 1; } @include breakpoint(small down){ max-width: 100%; width: 100%; transform: translateX(-100%); .secondary-nav{ width: calc(100% - 120px); } } &.is-nav-open{ transform: translateX(0); } } .layout-content{ flex-grow: 1; max-width: 100%; } .container{ padding: 1rem; max-width: 1200px; @include breakpoint(mediumlarge){ padding: 2rem; } }