body {
    margin: 0px 0px;
    padding: 0px 0px;
}

.obstacle {
    fill: green;
}

.player {
    fill: white;
    border: 1px solid green;
}

.background {
    fill: blue;
}

.message {
    text-align: center;
    font-size: 20px;
    padding: 5px 5px;
}