:root{--bg-color:#e3ccaf;--font-size:40px;--popup-color:#fff;--font-size-small:20px;--border-color:#a6a5a5;--font-color:#000;--font-color-disappear:#00000000;--box-shadow:0px 0px 5px 0px #42445a}body,html{background-attachment:fixed;background-color:#1a1a1a;background-image:url(chess-background.webp);background-position:50%;background-repeat:no-repeat;background-size:cover;border:0;font-family:Roboto,sans-serif;min-height:100vh;overflow:hidden;position:relative}body,canvas,html{height:100vh;margin:0;padding:0;width:100vw}canvas{background:transparent!important;border:8px solid #4a2c2a;border-radius:12px;box-sizing:border-box;display:block;left:0;position:absolute;top:0;z-index:1}.center-mid{left:50%;position:absolute;top:50%;transform:translate(-50%,-50%)}.btn{background-color:var(--bg-color);font-size:var(--font-size)}.btn.promotion{margin-left:8px}.btn.promotion:last-child{margin-right:8px}.end-popup{background-color:var(--popup-color);border:1px solid var(--border-color);font-size:var(--font-size-small);padding:10px;position:relative;text-align:center;z-index:1000}.end-popup-btn{margin-top:10px;text-align:center;width:100%}.btn-small{font-size:var(--font-size-small)}.btn-small,.score{background-color:var(--bg-color)}.score{border:1px solid var(--border-color);border-radius:3px;box-shadow:var(--box-shadow);display:none;font-size:var(--font-size);height:45px;min-width:350px;padding:2px 10px;position:absolute}.score.player-score{bottom:10px;display:none;right:10px}.score.opponent-score{display:none;left:10px;top:10px}#opponent-turn-notification{font-size:30px;position:absolute;right:30px;top:10px}#opponent-turn-notification:after{animation:dots 1s steps(5) infinite;content:" ."}@keyframes dots{0%,20%{color:var(--font-color);text-shadow:.25em 0 0 var(--font-color-disappear),.5em 0 0 var(--font-color-disappear)}40%{color:var(--font-color);text-shadow:.25em 0 0 var(--font-color-disappear),.5em 0 0 var(--font-color-disappear)}60%{text-shadow:.25em 0 0 var(--font-color),.5em 0 0 var(--font-color-disappear)}80%,to{text-shadow:.25em 0 0 var(--font-color),.5em 0 0 var(--font-color)}}