88x31samegame/public/style.css

:root {
    --tile-width: 88px;
    --tile-height: 31px;
    --size-x: 10;
    --size-y: 20;
    --padding: 2px;
}

* {
    font-family: sans-serif;
}

.game-info {
    font-size: 40px;
}

.gameover {
    display: none;
    position: absolute;
    left: 0;
    right: 0;
    top: 0;
    bottom: 0;
    backdrop-filter: blur(10px);
    background: rgba(255, 255, 255, 0.5);
    font-size: 30px;
    text-align: center;
    padding-top: 20%;
    z-index: 100;
}

.board {
    width: calc(var(--size-x) * var(--tile-width) + var(--padding) * (var(--size-x) + 1));
    height: calc(var(--size-y) * var(--tile-height) + var(--padding) * (var(--size-y) + 1));
    position: relative;
}

.tile {
    position: absolute;
    cursor: pointer;
    transition: bottom 0.5s;
    object-fit: cover;
    width: var(--tile-width);
    height: var(--tile-height);
}