body {
  font-family: Arial, sans-serif;
  margin: 0;
  padding: 0;
  background: #f4f4f4;
  color: #333;
}
header {
  background: #111;
  color: #fff;
  padding: 1em;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
header nav a {
  margin: 0 10px;
  color: #fff;
  text-decoration: none;
}
.hero {
  background: #6200ea;
  color: #fff;
  padding: 5em 2em;
  text-align: center;
}
.btn {
  display: inline-block;
  padding: 10px 20px;
  margin-top: 1em;
  background: #03dac5;
  color: #111;
  text-decoration: none;
  border-radius: 5px;
}
.pricing {
  list-style: none;
  padding: 2em;
  text-align: center;
}
.pricing li {
  margin: 1em 0;
  font-size: 1.2em;
}