body {
  margin: 0;
  padding: 0;
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  background: linear-gradient(to right, #e0eafc, #cfdef3);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: 100vh;
  color: #333;
}

h1 {
  font-size: 3rem;
  margin-bottom: 1rem;
  color: #1e3c72;
  text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.1);
}

code {
  background-color: #f4f4f4;
  padding: 0.5rem 1rem;
  border-radius: 5px;
  font-size: 1.2rem;
  box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

php {
  font-size: 1.5rem;
}