body {
    font-family: Arial, sans-serif;
    display: flex;
    justify-content: center;
    height: 100vh;
    margin: 0;
    background: #faf8ef;
    align-items: flex-start;
    padding-top: 40px;
}

#game {
    display: grid;
    grid-template-columns: repeat(4, 70px);
    grid-template-rows: repeat(4, 70px);
    gap: 10px;
    background: #bbada0;
    padding: 10px;
    border-radius: 10px;
    margin-top: 80px;
}

.tile {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    font-weight: bold;
    border-radius: 5px;
    background: #cdc1b4;
    color: #776e65;
}

div > button {
    border: 0;
    background: #cdc1b4;
    color: #776e65;
    border-radius: 5px;
}

div > button:active {
    background-color: #666;
}

.tile-2 {
    background: #eee4da;
}

.tile-4 {
    background: #ede0c8;
}

.tile-8 {
    background: #f2b179;
    color: #f9f6f2;
}

.tile-16 {
    background: #f59563;
    color: #f9f6f2;
}

.tile-32 {
    background: #f67c5f;
    color: #f9f6f2;
}

.tile-64 {
    background: #f65e3b;
    color: #f9f6f2;
}

.tile-128 {
    background: #edcf72;
    color: #f9f6f2;
    font-size: 20px;
}

.tile-256 {
    background: #edcc61;
    color: #f9f6f2;
    font-size: 20px;
}

.tile-512 {
    background: #edc850;
    color: #f9f6f2;
    font-size: 20px;
}

.tile-1024 {
    background: #edc53f;
    color: #f9f6f2;
    font-size: 16px;
}

.tile-2048 {
    background: #edc22e;
    color: #f9f6f2;
    font-size: 16px;
}

button.menu {
    position: absolute;
    padding: 1rem;
    margin-top: 1rem;
    font-size: 1.1rem;
    background-color: #776e65;
    color: white;
    border: none;
    border-radius: 10px;
    width: 80%;
    transition: background-color 0.2s ease;
    cursor: pointer;
}

button.menu:active {
    background-color: #cdc1b4;
}