#banner {
    background-color: #fff;
    padding: 80px 0;
    margin-bottom: 20px;
    margin-top: 75px;
    box-shadow: 0 0 20px rgba(42, 210, 222, 0.1);
  }
  @media (max-width: 376px) {
    #banner {
        margin-top: 90px;
    }
    
  }
  
  #banner h1 {
    font-size: 50px;
    font-weight: 700;
    margin-bottom: 30px;
    margin-top: -65px;
  }
  
  #banner p {
    font-size: 24px;
    margin-bottom: 40px;
  }
  #banner .btn {
    border-radius: 50px;
    margin-bottom: 10px;
  }

  #banner .btn:hover {
    border-radius: 50px;
    margin-top: 10px;
    background-color: #04a0a5;
  }
  
  #banner img {
    width: 100%;
    margin-top: 20px;
    height: 350px;
  }

  
  /* when data is read from the database using the PHP */
  #latest-books {
    background-color: #ffffff;
    padding: 50px 0;
  }
  
  #latest-books h2 {
    text-align: center;
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 30px;
  }
  
  #latest-books .card {
    border: none;
    background-color: #fff;
    box-shadow: 0 0 20px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease-in-out;
  }
  
  #latest-books .card:hover {
    transform: translateY(-5px);
    box-shadow: 0 0 40px rgba(0, 0, 0, 0.2);
  }
  
  #latest-books .card-img-top {
    height: 250px;
    object-fit: cover;
  }
  
  #latest-books .card-body {
    padding: 20px;
  }
  
  #latest-books .card-title {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 10px;
  }
  
  #latest-books .card-subtitle {
    font-size: 1.2rem;
    font-weight: 400;
    margin-bottom: 10px;
  }
  
  #latest-books .card-text {
    font-size: 1rem;
    margin-bottom: 10px;
  }
  
  #latest-books .btn-download {
    background-color: #007bff;
    border-color: #007bff;
    font-size: 1rem;
    font-weight: 700;
    text-transform: uppercase;
    padding: 10px 20px;
    transition: all 0.3s ease-in-out;
  }
  
  #latest-books .btn-download:hover {
    background-color: #0062cc;
    border-color: #005cbf;
  }
  .card-body {
    margin-bottom: 1rem;
    border-radius: 0.5rem;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    overflow: hidden;
    margin-right: 10px;
    width: 300%;
  }
  
  .card-img {
    height: 100%;
    object-fit: cover;
    margin: 0;
    padding: 0;
  }
  
  .card-title {
    font-size: 1.25rem;
    font-weight: bold;
    margin-bottom: 0.5rem;
  }
  
  .card-text {
    font-size: 1rem;
    margin-bottom: 0.5rem;
  }
  
  .card-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background-color: #e9ecef;
    padding: 0.75rem;
  }
  
  .card-footer small {
    font-size: 0.875rem;
  }
  
  .card-body .btn {
    border-radius: 50px;
    margin-top: 10px;
  }

  .card-body .btn:hover {
    border-radius: 50px;
    margin-top: 10px;
    background-color: #04a0a5;
  }
  
  .card-footer .download-count,
  .card-footer .like-count {
    display: inline-block;
    background-color: #6c757d;
    color: #fff;
    font-size: 0.875rem;
    padding: 0.25rem 0.5rem;
    border-radius: 0.25rem;
    margin-right: 0.5rem;
  }

/* About section */
/* About Us section */
/* About Us section */
#about-us {
    background-color: #eff1f3;
    padding: 80px 0;
  }
  
  #about-us .row {
    align-items: center;
  }
  
  #about-us .about-content {
    padding-right: 15px;
    padding-left: 15px;
    margin-bottom: 30px;
  }
  
  #about-us h2 {
    font-size: 40px;
    margin-bottom: 30px;
    color: #212529;
  }
  
  #about-us p {
    font-size: 16px;
    line-height: 30px;
    margin-bottom: 30px;
    color: #212529;
  }
  
  #about-us .btn {
    font-size: 18px;
    padding: 10px 10px;
    border-radius: 5px;
    background-color: #007bff;
    color: #fff;
    transition: all 0.3s;
  }
  
  #about-us .btn:hover {
    background-color: #04a0a5;
  }
  
  #about-us .about-image {
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 10px 20px rgba(0,0,0,0.1), 0 6px 6px rgba(0,0,0,0.1);
  }
  
  #about-us .about-image img {
    width: 100%;
    height: auto;
  }

  /* call to action section */
  #cta {
    background-color: #10c6aa;
    margin-top: 30px;
    margin-bottom: 30px;
  }
  
  #cta h2 {
    font-size: 2.5rem;
    font-weight: bold;
  }
  
  #cta a.btn {
    background-color: #ffffff;
    border-radius: 50px;
    padding: 15px 30px;
    font-size: 1.2rem;
    font-weight: bold;
    text-transform: uppercase;
    letter-spacing: 2px;
    color: #10c6aa;
    border: 3px solid #ffffff;

  }

  #cta a.btn:hover {
    border: 3px solid #ffffff;
    color: #fff;
    background-color: #10c6aa;
  }