body {
    font-family: Arial, sans-serif;
    text-align: center;
    margin-top: 50px;
}

#game-container {
    display: flex;
    flex-wrap: wrap;
    width: 310px;
    margin: 0 auto;
    gap: 5px;
}

.square {
    width: 60px;
    height: 60px;
    border: 2px solid #000;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
}

.square img {
    width: 55px;
    height: 55px;
}

.hidden {
    visibility: hidden;
}

#controls {
    margin-top: 20px;
}

button {
    margin: 5px;
    padding: 10px 20px;
    font-size: 16px;
    cursor: pointer;
}