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Exercise 1: HTML + CSS Profile Card
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<!-- index.html -->
<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Profile Card</title>
  <link rel="stylesheet" href="style.css">
</head>
<body>
  <div class="card">
    <img src="https://i.pravatar.cc/100" alt="Profile Picture">
    <h2>John Doe</h2>
    <p class="role">Frontend Developer</p>
    <p class="bio">Loves building beautiful UIs with HTML & CSS.</p>
    <button>Follow</button>
  </div>
</body>
</html>

/* style.css */
body {
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
  background: #f0f2f5;
  font-family: Arial, sans-serif;
}
.card {
  background: white;
  border-radius: 16px;
  padding: 30px;
  text-align: center;
  box-shadow: 0 4px 20px rgba(0,0,0,0.1);
  width: 260px;
}
.card img {
  border-radius: 50%;
  width: 100px;
  height: 100px;
}
.card h2 { margin: 12px 0 4px; }
.card .role { color: #888; font-size: 14px; }
.card .bio { font-size: 13px; color: #555; margin: 10px 0; }
.card button {
  background: #4f46e5;
  color: white;
  border: none;
  padding: 10px 28px;
  border-radius: 8px;
  cursor: pointer;
  font-size: 14px;
}
.card button:hover { background: #4338ca; }
