body {
    margin: 0;
    background: #111;
}

/* Rendu mobile-first (ADR-0001) : colonne centrée de 430 px maximum. */
#karta-root {
    max-width: 430px;
    margin: 0 auto;
    height: 100dvh;
}

#karta-root canvas {
    display: block;
    outline: none;
}