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

header {
  background: #222;
  color: #fff;
  padding: 20px;
  text-align: center;
}

header h1 {
  margin: 0;
}

nav {
  margin-top: 10px;
}

nav a {
  color: #fff;
  text-decoration: none;
  margin: 0 10px;
  font-weight: bold;
}

section {
  max-width: 900px;
  margin: 40px auto;
  padding: 0 20px;
}

h2 {
  color: #444;
  margin-bottom: 10px;
}

.projects {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 20px;
}

.project-card {
  background: #fff;
  border-radius: 8px;
  padding: 15px;
  box-shadow: 0 2px 6px rgba(0,0,0,0.1);
}

footer {
  text-align: center;
  padding: 15px;
  background: #222;
  color: #aaa;
  margin-top: 30px;
}