html {
  --content-width: 100%;
  --header-height: auto;
}

body > header {
  position: unset;
  margin-top: 0;
  margin: 0;
  padding: 1rem;
}

body > header > div {
  flex-direction: column;
  gap: 0;
}

body > header nav {
  padding: 0;
}

body > header nav ul {
  flex-direction: row;
  flex-wrap: wrap;
  gap: 1.5rem;
  padding: 0;
}

body > header[data-with-logo] div::before {
  width: 100%;
  height: var(--logo-width);
  margin-bottom: 1rem;
}

ul.classes {
  grid-template-columns: 1fr;
}

main > section + section {
  margin-top: 3rem;
}

main,
section {
  gap: 1rem;
}

ul.image-gallery {
  flex-direction: column;
}

ul.week-calendar {
  flex-direction: column;
}

article.course {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

article.course h4 {
  order: 0;
}

article.course::before {
  order: 1;
}

article.course > * {
  order: 2;
  margin: 0;
}

ul.team-members {
  flex-direction: column;
}

ul.team-members li {
  width: 100%;
}

form,
label,
fieldset,
input,
textarea {
  width: 100%;
}