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

#game-area {
    width: 600px;
    height: 400px;
    background: #111;
    border: 2px solid #444;
    margin: 20px auto;
    position: relative;
    overflow: hidden;
}

#ship {
    width: 40px;
    height: 40px;
    background: cyan;
    position: absolute;
    bottom: 10px;
    left: 280px;
    border-radius: 5px;
}

.asteroid {
    width: 40px;
    height: 40px;
    background: gray;
    border-radius: 50%;
    position: absolute;
}