* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: Arial, sans-serif;
}

/* Navbar */
.navbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 15px 30px;
  background: #222;
  color: white;
}

.navbar nav a {
  color: white;
  margin-left: 20px;
  text-decoration: none;
}

/* Hero section */
.hero {
  text-align: center;
  padding: 80px 20px;
  background: #f4f4f4;
}

.hero button {
  margin-top: 20px;
  padding: 10px 25px;
  border: none;
  background: #222;
  color: white;
  cursor: pointer;
}

/* Content boxes */
.content {
  display: flex;
  gap: 20px;
  padding: 40px;
}

.box {
  flex: 1;
  padding: 40px;
  background: #ddd;
  text-align: center;
}

/* Footer */
footer {
  text-align: center;
  padding: 15px;
  background: #222;
  color: white;
}

/* 🔥 MEDIA QUERY (MAIN TASK) */
@media (max-width: 768px) {
  .navbar {
    flex-direction: column;
    gap: 10px;
  }

  .navbar nav a {
    margin: 0 10px;
  }

  .content {
    flex-direction: column;
    padding: 20px;
  }

  .hero {
    padding: 50px 15px;
  }
}