header {
  max-width: 1024px;
  margin: 2rem auto 0 auto;
  /*padding: 0 0.5rem;*/
  background-color: var(--color-background);
  width: 100%;
  position: sticky;
  z-index: 1035;
  top: 0;
  border-bottom: 1px solid var(--color-border);
  left: 0;
  right: 0;
}

.header-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1rem;
}

.theme-switcher {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}