body, h1, h2, p, ul, li {
    margin: 0;
    padding: 0;
  }
  
  .active {
    color: white
  }
  
  header {
    background: #c80e13;
    position: sticky;
  }
  
  nav {
    position: sticky;
  }

  .nav-link {
    color: white;
  }
  
  nav ul li:hover {
    color: white;
    opacity: 80%;
    text-decoration: underline;
    text-underline-offset: 8px;
    transition: all 0.3s;
  }
  
  .logo {
    color: white;
    opacity: 100%;
    font-size: 20px;
  }
    
  #home {
    background-size: cover;
    text-align: center;
    padding: 100px;
    color: black;
    background-image: url("./pine-watt-2Hzmz15wGik-unsplash.jpg");
  }
    
  #home h1 {
    font-size: 36px;
    opacity: 90%;
    margin-bottom: 20px;
  }
    
  #home p {
    font-size: 18px;
    margin-bottom: 40px;
    opacity: 85%;
  }

  #home Details {
    color:white;
  }
    
  .btn {
    margin-top: 3px;
    display: inline-block;
    padding: 10px 20px;
    text-decoration: none;
  }

  .btn:hover {
    background: #c80e13;
  }
  
  strong {
    font-size: 80px;
    font-weight: 500;
    letter-spacing: -1px;
  }
  
  details {
    cursor: pointer;
    font-size: 20px;
    text-align: left;;
  }
  
  #about {
    margin-top: 0px;
    background-color: #c80e13;
  }
  
  #about-heading, #contact-heading {
    margin-bottom: 50px;
    text-decoration: underline;
    text-underline-offset: 10px;
    align-items: center;
    text-align: center;
    color: white;
  }

  #contact-heading {
    color: black;
  }
  
  #contact {
    background-size: cover;
    background-image: url("./pawel-czerwinski-Qiy4hr18aGs-unsplash.jpg");
    color: black;
  }
  
  .start-button {
    padding: 20px 50px;
    font-size: 20px;
  }
  
  .start-button:hover {
    color: white;
  }
  
  .btn {
    border-radius: 30px;
  }
  
  
  section {
    padding: 80px;
  }
    
  footer {
    display: flex;
    justify-content: center;
    align-items: center;
    background-color: #c80e13;
    padding: 20px;
    color: #ffffff;
    opacity: 60%;
  }
  
  .card {
    background: #c80e13;
  }

  .card:hover {
    transform: scale(1.01);
    transition: all;
    box-shadow: 0 2px 8px cyan;
  }