html, body { height: 100%; overflow-x: hidden; overflow-y: scroll; background: #f4f4f4; } .mui-bar .mui-pull-left .mui-icon { padding-right: 5px; font-size: 28px; } .mui-bar .mui-btn { font-weight: normal; font-size: 18px; color: #000000; } .mui-bar .mui-btn-link { top: 1px; } #header { margin: 20px auto; background-color: white; }