body {
  margin: 0;
  color: #265b67;
  font: 16px/1.5 system-ui, sans-serif;
}

main {
  max-width: 640px;
  margin: 64px auto;
  padding: 0 24px;
}

a {
  color: #117a8a;
}

.banner {
  position: fixed;
  right: 0;
  bottom: 0;
  left: 0;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
  padding: 16px 24px;
  background: #f0f7f8;
  border-top: 1px solid #bfdce1;
}

.banner p {
  flex: 1 1 240px;
  margin: 0;
}

.banner button {
  padding: 8px 16px;
  color: #fff;
  font: inherit;
  background: #117a8a;
  border: 0;
  cursor: pointer;
}