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

.game-container {
    text-align: center;
}

.grid-container {
    display: grid;
    grid-template-columns: repeat(4, 100px);
    grid-template-rows: repeat(4, 100px);
    gap: 10px;
    margin-bottom: 20px;
}

.grid-item {
    width: 100px;
    height: 100px;
    background-color: #eee4da;
    font-size: 45px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 5px;
}

.grid-item[data-value='2'] { background-color: #eee4da; }
.grid-item[data-value='4'] { background-color: #ede0c8; }
.grid-item[data-value='8'] { background-color: #f2b179; }
.grid-item[data-value='16'] { background-color: #f67c5f; }
.grid-item[data-value='32'] { background-color: #f76347; }
.grid-item[data-value='64'] { background-color: #f3c22e; }
.grid-item[data-value='128'] { background-color: #edc22e; }
.grid-item[data-value='256'] { background-color: #edc22e; }
.grid-item[data-value='512'] { background-color: #f3c22e; }
.grid-item[data-value='1024'] { background-color: #f762a8; }
.grid-item[data-value='2048'] { background-color: #edc22e; }

#restartButton {
    padding: 10px 15px;
    font-size: 16px;
    cursor: pointer;
}