body {
  background-color: whitesmoke;
  margin: 0;
  font-family: Verdana, Arial, sans-serif;
  line-height: 1.6;
}

.page-shell {
  max-width: 960px;
  margin: 0 auto;
  padding: 0 1rem 2rem;
}

h1 {
  color: maroon;
  text-align: center;
  font-size: xx-large;
}

h2,
h3,
p {
  margin: 1rem 0;
}

p {
  font-size: 1rem;
}

.site-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  justify-content: center;
  align-items: center;
  padding: 0.75rem 1rem;
  background: #e9e9e9;
  border-bottom: 1px solid #d1d1d1;
  margin-bottom: 1rem;
}

.site-nav a {
  color: #222;
  text-decoration: none;
  font-weight: 600;
}

.site-nav a:hover,
.site-nav a:focus-visible {
  text-decoration: underline;
}

.text-center {
  text-align: center;
}

aside {
  margin-left: 15px;
  margin-bottom: 15px;
  float: right;
  display: block;
  font-style: italic;
  background-color: lightgray;
  padding: 0.75rem;
}

.content-section {
  margin-top: 1.5rem;
}

.feedback-cta,
.back-to-top {
  margin-top: 1.5rem;
  font-size: 0.95rem;
}