main {
  width: 90vw;
  aspect-ratio: 4 / 3;
  max-width: none;
  max-height: none;
  background: rgba(41, 41, 41, 1);
  overflow-y: auto;
  overflow-x: hidden;
  scroll-behavior: smooth;
  display: flex;
  flex-direction: column;
  box-sizing: border-box;
}