/* Reset and fullscreen layout */
html, body {
    margin: 0;
    padding: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
}

/* Fullscreen iframe */
#app-frame {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    border: 0;
    outline: none;
    display: block;
}