* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: Arial, sans-serif;
}

body {
    height: 100vh;
    background: linear-gradient(#70c5ce, #ffffff);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

canvas {
    border: 4px solid #000;
    background: #87ceeb;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

#score_card {
    margin-top: 15px;
    font-size: 32px;
    font-weight: bold;
}