/* COULEURS */
:root {
    --color-primary: #000000;
    --color-secondary: radial-gradient(1000px 500px at 10% 20%, #000000 0%, #000000 50%, #000000 100%), #000000;
}

/* Backgrounds */
header#header {
    background-color: var(--color-primary);
}
header#header #hero-banner {
    background: var(--color-secondary);
}