body {
  margin: 0;
  padding: 0;
  font-family: Arial, sans-serif;
  background: #f4f4f4;
}

.container {
  width: 600px;
  margin: 80px auto;
  background: #fff;
  padding: 30px;
  border-radius: 8px;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.15);
}

h1 {
  color: #0b5ed7;
}