html {
    height: 100%;
  }
  
  body {
    background-color: #f2f2f2;
    color: #333;
    font-family: 'Roboto', sans-serif;
    font-size: 18px;
    margin: 0;
    padding: 0;
    height: 100%;
    display: flex;
    flex-direction: column;
  }
  
  header {
    background-color: #333;
    color: #fff;
    display: flex;
    justify-content: space-between;
    padding: 20px;
    flex-shrink: 0;
  }
  
  h1 {
    font-family: 'Montserrat', sans-serif;
    font-size: 48px;
    font-weight: 700;
    margin: 0;
    line-height: 1;
  }
  
  nav ul {
    display: flex;
    list-style-type: none;
    margin: 0;
    padding: 0;
  }
  
  nav li {
    margin: 0 20px;
  }
  
  nav li a {
    color: #fff;
    font-family: 'Roboto', sans-serif;
    font-size: 20px;
    font-weight: 500;
    text-decoration: none;
    transition: color 0.3s ease;
  }
  
  nav li a:hover {
    color: #999;
  }
  
  main {
    margin: 40px;
    flex-grow: 1;
  }
  
  h2 {
    font-family: 'Montserrat', sans-serif;
    font-size: 36px;
    font-weight: 700;
    margin-bottom: 20px;
    color: #333;
    line-height: 1;
  }
  
  p {
    margin: 20px 0;
    color: #666;
    font-family: 'Roboto', sans-serif;
    font-size: 18px;
    font-weight: 400;
    line-height: 1.5;
  }
  
  button {
    background-color: #333;
    border: none;
    border-radius: 5px;
    color: #fff;
    cursor: pointer;
    font-family: 'Roboto', sans-serif;
    font-size: 20px;
    font-weight: 500;
    margin: 20px 0;
    padding: 15px;
    text-align: center;
    text-decoration: none;
    width: 200px;
    transition: background-color 0.3s ease;
  }
  
  button:hover {
    background-color: #666;
  }
  
  footer {
    background-color: #333;
    color: #fff;
    padding: 20px;
    text-align: center;
    flex-shrink: 0;
    font-family: 'Roboto', sans-serif;
    font-size: 16px;
    font-weight: 400;
  }