body {
  margin: 0;
  font-family: Arial, sans-serif;
  background-color: #f4f6f9;
  color: #333;
}

header {
  background: #60a9f3;
  color: white;
  padding: 20px;
  text-align: center;
}

nav {
  background: #34495e;
  padding: 10px;
  text-align: center;
}

nav a {
  color: white;
  margin: 0 15px;
  text-decoration: none;
  font-weight: bold;
}

nav a:hover {
  text-decoration: underline;
}

section {
  padding: 40px 20px;
  max-width: 900px;
  margin: auto;
}

.box {
  background: white;
  padding: 20px;
  margin: 20px 0;
  border-radius: 8px;
  box-shadow: 0 4px 10px rgba(0,0,0,0.1);
}

footer {
  background: #2c3e50;
  color: white;
  text-align: center;
  padding: 15px;
  margin-top: 40px;
}

button {
  background: #3498db;
  color: white;
  border: none;
  padding: 10px 20px;
  border-radius: 5px;
  cursor: pointer;
  font-size: 16px;
}

button:hover {
  background: #2980b9;
}

.row {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}