body {
  font-family: Arial, sans-serif;
  margin: 0;
  padding: 0;
  line-height: 1.6;
  color: #333;
  background: #fff;
}
header {
  background: linear-gradient(90deg, #4e54c8, #8f94fb);
  color: white;
  padding: 2rem;
  text-align: center;
}
nav {
  text-align: center;
  padding: 1rem;
  background: #f4f4f4;
}
nav a {
  margin: 0 1rem;
  text-decoration: none;
  color: #333;
}
main {
  padding: 2rem;
}
section {
  margin-bottom: 2rem;
}
footer {
  text-align: center;
  padding: 1rem;
  background: #222;
  color: white;
}
.btn {
  display: inline-block;
  margin-top: 1rem;
  padding: 0.5rem 1rem;
  background: #fff;
  color: #4e54c8;
  text-decoration: none;
  border-radius: 4px;
}