body {
  font-family: Arial, sans-serif;
  margin: 0;
  padding: 0;
  line-height: 1.6;
}

header {
  background: #6913e1;
  color: rgb(255, 255, 255);
  padding: 1em;
  text-align: center;
}

nav a {
  color: #cfb7ef;
  margin: 0 15px;
  text-decoration: none;
}

section {
  
  padding: 2em;
  max-width: 800px;
  margin: auto;
}

footer {
  background: #f4f4f4;
  text-align: center;
  padding: 1em;
  position: sticky;
  bottom: 0;
  width: 100%;
}

@media (max-width: 600px) {
  nav a {
    display: block;
    margin: 10px 0;
  }
}