* {
    font-family: "Open Sans", sans-serif;
  }
  body {
    font-family: "Open Sans", sans-serif;
    margin: 0 auto;
    padding: 2rem;
    color: #111;
    line-height: 1.6;
  }
  .headline {
    text-align: center;
    font-weight: 800;
    font-size: 2.5rem;
    margin-bottom: 1rem;
  }
  header {
    border-bottom: 2px solid #00aaff;
    margin-bottom: 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
  }
  
  .logo {
    font-weight: 800;
    font-size: 1.5rem;
  }
  
  nav a {
    margin-left: 1rem;
    text-decoration: none;
    color: #000;
  }
  
  .markdown h1, .markdown h2, .markdown h3 {
    margin-top: 2rem;
  }
  
  .markdown p {
    margin: 1rem 0;
  }
  
  .markdown em {
    color: #555;
  }