.header-layout {
  display: grid;
  grid-template-areas: "header" "main";
  grid-template-rows: auto 1fr;
  block-size: 100dvh;
}

.centered-layout {
  display: grid;
  place-items: center;
  block-size: 100dvh;
}

.container {
  inline-size: 100%;
  margin-inline: auto;
  max-inline-size: var(--container-width, 64rem);
}

#header {
  align-items: center;
  background-color: rgb(from var(--color-border-light) r g b / .5);
  border-block-end-width: var(--border);
  block-size: var(--size-16);
  column-gap: var(--size-4);
  display: flex;
  grid-area: header;
  padding-inline: var(--size-4);
  view-transition-name: header;
}