html,
body {
    width: 100%;
    height: 100%;
    margin: 0;
    padding: 0;
}

body {
    overflow: hidden;
    background: #0a0a0a;
}

#composeApp {
    width: 100vw;
    height: 100vh;
    min-height: 100vh;
}

canvas {
    display: block;
}