* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
  }
  
  body {
    font-family: 'Segoe UI', sans-serif;
    line-height: 1.6;
    background: #f4f4f4;
    color: #333;
  }
  
  .container {
    width: 90%;
    max-width: 1000px;
    margin: auto;
    padding: 20px 0;
  }
  
  header {
    background: #333;
    color: #fff;
    padding: 20px 0;
  }
  
  header h1 {
    float: left;
  }
  
  nav ul {
    list-style: none;
    float: right;
  }
  
  nav ul li {
    display: inline;
    margin-left: 20px;
  }
  
  nav ul li a {
    color: #fff;
    text-decoration: none;
  }
  
  .hero {
    background: #007BFF;
    color: #fff;
    padding: 100px 0;
    text-align: center;
  }
  
  .hero .btn {
    background: #fff;
    color: #007BFF;
    padding: 10px 20px;
    margin-top: 20px;
    display: inline-block;
    text-decoration: none;
    font-weight: bold;
  }
  
  .about, .projects, .contact {
    background: #fff;
    padding: 60px 0;
  }
  
  footer {
    background: #333;
    color: #fff;
    text-align: center;
    padding: 20px 0;
    margin-top: 40px;
  }