body{background-color:#000;color:gray;padding:30px}html,body{margin:0;padding:0}.flipbook{width:100vw;height:90vh}.action-bar{width:100%;height:30px;padding:10px 0;display:flex;justify-content:center;align-items:center}.action-bar .btn:not(:first-child){margin-left:10px}.action-bar .btn{font-size:30px;color:#999}.material-design-icon{display:inline-flex;align-self:center;position:relative;height:1em;width:1em}