* {
    padding: 0;
    margin: 0;
    box-sizing: border-box;
  }
  
  nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-right: 15px;
    padding: 10px;
    font-family: sans-serif;
    position: fixed;
    width: 100%;
    background: white;
    z-index: 100;
    height: 70px;
  }
  
  nav .logo-container {
    margin-left: 40px;
    background-image: url('logo.png');
    width: 50px;
    height: 50px;
    z-index: 101;
    background-size: cover;
    background-repeat: no-repeat;
    background-position: center;
    padding: 0px;
  }
  
  nav ul {
    margin-right: 40px;
  }
  
  nav ul li {
    display: inline;
    list-style: none;
    margin-left: 30px;
  }
  
  nav ul li a {
    text-decoration: none;
    color: #000;
  }
  
  /* New PDF container styles */
  .pdf-container {
    position: fixed;
    top: 70px; /* Height of nav */
    left: 0;
    right: 0;
    bottom: 0;
    display: flex;
    justify-content: center;
    align-items: center;
    background-color: #f5f5f5;
    padding: 20px;
  }
  
  .pdf-container embed {
    width: 95%;
    height: 95%;
    border: none;
  }