body {
    background: black;
    overflow: hidden;
    margin: 0;
    font-family: Arial, sans-serif;
}

.game-container {
    position: relative;
    width: 100vw;
    height: 100vh;
    background-image: url('https://source.unsplash.com/1600x900/?galaxy,stars');
    background-size: cover;
    overflow: hidden;
}

#spaceship {
    position: absolute;
    bottom: 20px;
    left: 50%;
    width: 50px;
    height: 50px;
    background: url('https://upload.wikimedia.org/wikipedia/commons/6/6a/SpaceX_Crew_Dragon.png') no-repeat center;
    background-size: cover;
    transform: translateX(-50%);
}

.bullet {
    position: absolute;
    width: 5px;
    height: 15px;
    background: yellow;
    border-radius: 5px;
}

.meteor {
    position: absolute;
    width: 40px;
    height: 40px;
    background: url('https://upload.wikimedia.org/wikipedia/commons/1/15/Meteor_burning_up_in_Earth%27s_atmosphere_%28crop%29.jpg') no-repeat center;
    background-size: cover;
}