* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}
body {
  font-family: 'Segoe UI', sans-serif;
  line-height: 1.6;
  background: #f9f9f9;
  color: #333;
  padding: 20px;
}
header {
  text-align: center;
  padding: 40px 0;
  background: #222;
  color: #fff;
}
header h1 {
  margin-bottom: 10px;
}
nav a {
  margin: 0 10px;
  color: #f0f0f0;
  text-decoration: none;
}
nav a:hover {
  text-decoration: underline;
}
main {
  max-width: 800px;
  margin: 40px auto;
}
section {
  margin-bottom: 40px;
}
.project {
  background: #fff;
  padding: 15px;
  margin: 10px 0;
  border-radius: 8px;
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.1);
}
footer {
  text-align: center;
  padding: 20px;
  font-size: 0.9em;
  color: #666;
}