body {
  background-color: #000;
  color: #fff;
  font-family: Arial, sans-serif;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 20px;
}
h1 {
  font-size: 2rem;
}
.section {
  margin-top: 30px;
  width: 100%;
  max-width: 900px;
}