body {
  font-family: Arial, sans-serif;
  margin: 0;
  padding: 0;
  background: #f8f8f8;
  color: #333;
}

header {
  background: #222;
  color: #fff;
  padding: 1rem;
  text-align: center;
}

nav a {
  color: #fff;
  margin: 0 10px;
  text-decoration: none;
}

main {
  padding: 2rem;
}

.hero {
  background: #eee;
  padding: 2rem;
  text-align: center;
}

.button {
  display: inline-block;
  padding: 0.5rem 1rem;
  background: #cc0000;
  color: #fff;
  text-decoration: none;
  margin-top: 1rem;
}

    .centered-video-container {
        text-align: center;
    }

.video-container iframe {
  width: 100%;
  height: 315px;
  max-width: 560px;
}

footer {
  background: #222;
  color: #fff;
  text-align: center;
  padding: 1rem;
  margin-top: 2rem;
}

 ul li {
   margin-bottom: 10px;
 }