#main_graphic,html body{width:100%;height:100%}*{margin:0;padding:0}#main_graphic{position:fixed}.option-list{position:absolute;z-index:99;width:60%;left:50%;transform:translateX(-50%);bottom:30px;display:flex;justify-content:space-around;list-style:none}.option-list-item-button{padding:10px 30%;color:#fff;font-size:20px;text-decoration:none;border-radius:5px;background-color:rgba(0,0,0,.5)}