body {
  margin: 0;
  font-family: Arial, Helvetica, sans-serif;
  background-color: #f2f4f8;
  color: #222;
}

header {
  background-color: #1e293b;
  color: white;
  padding: 25px;
  text-align: center;
}

nav {
  background-color: #2563eb;
  padding: 12px;
  text-align: center;
}

nav a {
  color: white;
  margin: 0 15px;
  text-decoration: none;
  font-weight: bold;
}

nav a:hover {
  text-decoration: underline;
}

.container {
  max-width: 1100px;
  margin: auto;
  padding: 25px;
}

.card {
  background: white;
  padding: 20px;
  margin-bottom: 25px;
  border-radius: 12px;
  box-shadow: 0 3px 8px rgba(0,0,0,0.12);
}

h2 {
  color: #1d4ed8;
}

img.avatar {
  width: 200px;
  border-radius: 50%;
  margin-bottom: 15px;
}

ul {
  margin-left: 20px;
}