body {
  margin: 0;
  font-family: Arial, sans-serif;
  background: #f9f9f9;
  color: #333;
}

header {
  background: linear-gradient(90deg, #ffcc00, #ff9900);
  padding: 15px 30px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

header h1 {
  margin: 0;
  font-size: 22px;
  color: #222;
}

nav a {
  margin-left: 20px;
  text-decoration: none;
  color: #222;
  font-weight: bold;
}

nav a:hover {
  color: #fff;
}

.container {
  max-width: 1100px;
  margin: 30px auto;
  padding: 20px;
}

h2 {
  text-align: center;
  margin-bottom: 20px;
}

button, .btn {
  display: inline-block;
  background: #ffcc00;
  padding: 12px 24px;
  border-radius: 6px;
  border: none;
  text-decoration: none;
  font-weight: bold;
  color: #000;
  cursor: pointer;
  transition: 0.3s;
}

button:hover, .btn:hover {
  background: #ffaa00;
}

.cards {
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
  justify-content: center;
}

.card {
  background: #fff;
  padding: 20px;
  border-radius: 10px;
  box-shadow: 0 4px 12px rgba(0,0,0,0.1);
  flex: 1 1 calc(33% - 40px);
  min-width: 280px;
  text-align: center;
}

.card img {
  max-width: 100px;
  margin-bottom: 15px;
}

footer {
  background: #222;
  color: #fff;
  text-align: center;
  padding: 15px;
  margin-top: 40px;
}