:root { color-scheme: dark; background: #111; }
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; background: #111; }
body { overflow-x: hidden; }
.landing { width: 100%; }
.page-section { width: 100%; line-height: 0; background: #111; }
.page-section picture, .page-section img { display: block; width: 100%; }
.page-section img { height: auto; }
@media (min-width: 768px) {
  .page-section img { width: 100%; height: auto; }
}