.rank-label{position:absolute;top:2px;left:2px;font-size:14px;font-weight:700;color:inherit;opacity:1}.file-label{position:absolute;bottom:2px;right:2px;font-size:14px;font-weight:700;color:inherit;opacity:1}.square.light .rank-label,.square.light .file-label{color:#779556}.square.dark .rank-label,.square.dark .file-label{color:#ebecd0}@media(max-width:768px){.rank-label,.file-label{font-size:12px}}.game-over-overlay{position:absolute;top:0;left:0;width:100%;height:100%;background:#000000b3;display:flex;flex-direction:column;justify-content:center;align-items:center;color:#fff;z-index:10}.custom-board{position:relative}