body {
  margin: 0;
  background-color: #111;
  font-family: 'Segoe UI', sans-serif;
  color: #fff;
}

nav {
  background: #222;
  padding: 0.5em 1em;
}

nav div {
  max-width: 1000px;
  margin: 0 auto;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
}

nav a {
  color: #fff;
  text-decoration: none;
  padding: 0.5em 1em;
  text-align: center;
  min-width: 80px;
}

.section {
  position: relative;
  overflow: hidden;
}

.section img {
  width: 100%;
  height: auto;
  display: block;
}

.section-text {
  position: absolute;
  bottom: 1em;
  left: 1em;
  right: 1em;
  background: none;
  padding: 0;
  margin: 0;
  color: #fff;
  font-size: 2vw;
  line-height: 1.3;
  text-shadow: 0 1px 3px rgba(0, 0, 0, 0.8),
               0 2px 6px rgba(0, 0, 0, 0.6);
}

@media (max-width: 600px) {
  .section-text {
    position: static;
    text-shadow: none;
    background: #111;
    margin-top: -4px;
    padding: 1em 5%;
    font-size: 1rem;
  }
}

.content-block {
  padding: 3em 5%;
  background-color: #111;
  max-width: 1000px;
  margin: 0 auto;
}

.content-block h2 {
  font-size: 2rem;
  margin-bottom: 1rem;
}

.content-block p {
  font-size: 1.1rem;
  line-height: 1.6;
}

footer {
  background: #222;
  color: #aaa;
  text-align: center;
  padding: 2em;
}

footer a {
  color: #ccc;
  text-decoration: none;
}