body{margin:0;background-color:#000}#overlay{position:absolute;font-size:2em;z-index:2;top:0;left:0;width:100%;height:100%;display:flex;align-items:center;justify-content:center;flex-direction:column;background:#000000b3}#overlay button{background:transparent;border:0;border:1px solid rgb(255,255,255);border-radius:4px;color:#fff;padding:1em;text-transform:uppercase;cursor:pointer;width:15%}