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

h1 {
    color: #333;
}

#dartboard {
    width: 400px;
    height: 400px;
    margin: 20px auto;
    background: url('https://upload.wikimedia.org/wikipedia/commons/thumb/4/42/Darts_in_a_dartboard.jpg/640px-Darts_in_a_dartboard.jpg') no-repeat center center;
    background-size: cover;
    border: 5px solid #000;
    border-radius: 50%;
    position: relative;
}

#dart {
    width: 10px;
    height: 10px;
    background-color: red;
    border-radius: 50%;
    position: absolute;
}

#score {
    font-size: 24px;
    color: #333;
}