html,body{height:100%;margin:0}body{font-family:Segoe UI,Tahoma,Geneva,Verdana,sans-serif;cursor:pointer}.container{display:flex;justify-content:center;align-items:center;height:100%}#score{position:absolute;top:30px;right:30px;font-size:2em;font-weight:900}#introduction{width:200px;height:150px;position:absolute;font-weight:600;font-size:.8em;font-family:Segoe UI,Tahoma,Geneva,Verdana,sans-serif;text-align:center;transition:opacity 2s}#restart{width:120px;height:120px;position:absolute;border-radius:50%;color:#fff;background-color:red;border:none;font-weight:700;font-size:1.2em;font-family:Segoe UI,Tahoma,Geneva,Verdana,sans-serif;display:none;cursor:pointer}#perfect{position:absolute;opacity:0;transition:opacity 2s}#youtube,#youtube-card{display:none}@media (min-height: 425px){#youtube{z-index:2;display:block;width:100px;height:70px;position:absolute;bottom:20px;left:20px;background:red;border-radius:50%/11%;transform:scale(.8);transition:transform .5s}#youtube:hover,#youtube:focus{transform:scale(.9)}#youtube:before{content:"";display:block;position:absolute;top:7.5%;left:-6%;width:112%;height:85%;background:red;border-radius:9%/50%}#youtube:after{content:"";display:block;position:absolute;top:20px;left:40px;width:45px;height:30px;border:15px solid transparent;box-sizing:border-box;border-left:30px solid white}#youtube span{font-size:0;position:absolute;width:0;height:0;overflow:hidden}#youtube:hover+#youtube-card{display:block;position:absolute;bottom:12px;left:10px;padding:25px 25px 25px 130px;width:300px;background-color:#fff}}.touch-active{cursor:pointer!important}#game{touch-action:none}button{min-width:44px;min-height:44px}