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

body {
  line-height: 1.6;
  background-color: #f4f4f4;
  color: #333;
}

header {
  background-color: #003366;
  color: white;
  padding: 1rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  font-size: 1.5rem;
  font-weight: bold;
}

nav ul {
  list-style: none;
  display: flex;
  gap: 1rem;
}

nav a {
  color: white;
  text-decoration: none;
}

.hero {
  background: url('hero-image.jpg') center/cover no-repeat;
  text-align: center;
  padding: 5rem 2rem;
  color: white;
  background-color: #004080;
}

.hero h1 {
  font-size: 2.5rem;
  margin-bottom: 1rem;
}

.btn {
  display: inline-block;
  margin-top: 1rem;
  padding: 0.7rem 1.5rem;
  background: #ffcc00;
  color: #003366;
  font-weight: bold;
  text-decoration: none;
  border-radius: 5px;
}

.courses {
  padding: 2rem;
  background: white;
}

.course-grid {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.course-card {
  background: #e6f0ff;
  padding: 1rem;
  border-radius: 8px;
  flex: 1;
  min-width: 250px;
}

.about, .contact {
  padding: 2rem;
}

form {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  max-width: 500px;
}

input, textarea {
  padding: 0.7rem;
  border: 1px solid #ccc;
  border-radius: 5px;
}

button {
  background-color: #003366;
  color: white;
  padding: 0.7rem;
  border: none;
  cursor: pointer;
}

footer {
  text-align: center;
  padding: 1rem;
  background-color: #003366;
  color: white;
}