body {
  background-color: #0d0d3f;
  color: #ffffff;
  font-family: sans-serif;
  padding: 20px;
  text-align: center;
}

h1 {
  font-size: 28px;
  margin-bottom: 30px;
}

ul {
  list-style-type: none;
  padding: 0;
}

li {
  margin-bottom: 40px;
}

h2 {
  margin-bottom: 10px;
  font-size: 20px;
  color: #87cefa;
}

video, iframe {
  border: 2px solid #444;
  border-radius: 2px;
  max-width: 100%;
}