html, body {
    background-color: darkblue;
    overflow: hidden;
    width: 100vw;
    height: 100vh;
    margin: 0;
    padding: 0;
}

svg {
    stroke: white;
    stroke-width: 5px;
}

.fish {
    stroke: lightseagreen;
    fill: orange;
    stroke-width: 10px;
    stroke-linejoin: round;
}