body {
  background: white;
  font-size: 1rem;
  font-family: Verdana;
}

nav {
  width: 800px;
  height: 1px;
  text-align: center;
  margin: 0 auto;
}

nav ul, nav li {
  text-decoration: none;
  list-style-type: none;
}

nav a {
  color: white;
}

section {
  width: 800px;
  margin: 0 auto;
}

a {
  text-decoration: none;
}

h3 {
  margin: .75rem;
}

.sea-ads {
  text-align: center;
}
.sea-ads img {
  border: solid 2px black;
  height: 140px;
  max-width: 200px;
  margin: 2px;
}
.sea-ads img:hover {
  border: solid 2px green;
}
.results-page.sea-ads img {
  width: 200px;
  height: auto;
  margin-bottom: .5rem;
}

div.vendpic img {
max-height: 300px;
max-width: 300px;
}