body {
    margin: 0;
    padding: 0;
    overflow: hidden;
}

#game-container {
    position: relative;
    width: 600px;
    height: 600px;
    background-color: #000;
}

#pacman {
    position: absolute;
    width: 40px;
    height: 40px;
    background-color: yellow;
    border-radius: 50%;
    z-index: 1;
}

.ghost {
    position: absolute;
    width: 40px;
    height: 40px;
    background-color: red;
    border-radius: 50%;
    z-index: 1;
}