:root {
    --window-background: #051e30;
}

html,
body {
    width: 100%;
    height: 100%;
    min-height: 100%;
    margin: 0;
    overflow: hidden;
    background: var(--window-background);
}

html[data-theme="octobre_rose"] {
    --window-background: #250d1d;
}

html[data-theme="novembre_bleu"] {
    --window-background: #0b2540;
}

iframe {
    display: block;
    width: 100%;
    height: 100vh;
    height: 100dvh;
    border: 0;
    background: var(--window-background);
}