body {
    font-family: Arial, sans-serif;
    text-align: center;
    background-color: #f0f0f0;
}

#game-board {
    width: 100%;
    height: 500px;
    position: relative;
    border: 1px solid #ccc;
    margin-top: 20px;
    background-color: white;
}

.number {
    position: absolute;
    background-color: lightblue;
    border: 2px solid #000;
    border-radius: 50%;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
}

#result {
    margin-top: 20px;
    font-size: 24px;
    color: #333;
}

#start-button {
    padding: 10px 20px;
    font-size: 18px;
    cursor: pointer;
}