body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  margin: 0;
  background: #fffffc;
  color: #242424;
}

.page-content {
  max-width: 900px;
  margin: 2rem auto 4rem;
  padding: 0 1rem;
}

.back-link {
  display: inline-block;
  margin-top: 2rem;
  color: #0077cc;
  font-weight: 600;
  text-decoration: none;
}

.back-link:hover,
.back-link:focus {
  text-decoration: underline;
  outline: none;
}

/* Apply box-sizing globally */
*, *::before, *::after {
  box-sizing: border-box;
}