* {
  box-sizing: border-box;
}
body {
  margin: 0;
  padding: 0;
  font-family: "Helvetica Neue", sans-serif;
  background: linear-gradient(135deg, #89f7fe, #66a6ff);
  display: flex;
  align-items: center;
  justify-content: center;
  height: 100vh;
  color: #333;
}
.container {
  background: #fff;
  padding: 40px;
  border-radius: 20px;
  box-shadow: 0 8px 20px rgba(0,0,0,0.2);
  text-align: center;
  max-width: 400px;
  width: 90%;
}
h1 {
  font-size: 28px;
  margin-bottom: 10px;
}
p {
  font-size: 16px;
  margin-bottom: 20px;
}
a.button {
  display: inline-block;
  padding: 12px 24px;
  background: #66a6ff;
  color: white;
  border-radius: 30px;
  text-decoration: none;
  font-weight: bold;
  transition: background 0.3s ease;
}
a.button:hover {
  background: #4a90e2;
}