header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 10;
  background-color: rgba(207, 37, 37, 0.9);
  box-shadow: 0px 1px 10px rgba(0, 0, 0, 0.1);
  padding: 20px;
}

header::after {
  content: "";
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image: url(background.jpg);
  background-size: cover;
  filter: blur(5px);
  z-index: -1;
}
.logo img {
  width: 60px;
  height: 60px;
  object-fit: cover;   
}

.search-form {
  display: flex;
  align-items: center;
  background-color: #fff;
  color: #333;
  border-radius: 25px;
  padding: 10px 20px;
}

input[type="text"] {
  border: none;
  outline: none;
  font-size: 18px;
  width: 200px;
  padding-left: 20px;
}

button[type="submit"] {
  border: none;
  outline: none;
  background-color: #333;
  color: #fff;
  font-size: 18px;
  padding: 10px 20px;
  border-radius: 25px;
  cursor: pointer;
}

nav ul {
  display: flex;
  list-style: none;
  margin: 0;
  padding: 0;
}

nav li a {
  color: #fff;
  font-size: 18px;
  text-decoration: none;
  padding: 20px;
}

.sign-up-btn {
  background-color: #fff;
  color: #333;
  border-radius: 25px;
}

.sign-up-btn:hover {
  background-color: #333;
  color: #fff;
}




.book-preview {
    display: flex;
    justify-content: center;
    align-items: center;
    height: 500px;
    background-color: #f2f2f2;
    padding: 40px;
    margin: 110px;
    text-align: center;
    border-radius: 10px;
    box-shadow: 0 4px 8px 0 rgba(0, 0, 0, 0.2);
  }
  
  .book-cover {
    width: 40%;
    text-align: center;
  }   
  
  img {
    width: 80%;
    height: 80%;
    object-fit: cover;
    border-radius: 10px;
    box-shadow: 0 4px 8px 0 rgba(0, 0, 0, 0.2);
  }
  
  .book-details {
    width: 60%;
    padding: 40px;
    text-align: left;
  }
  
  h1 {
    font-size: 36px;
    margin-bottom: 20px;
  }
  
  h2 {
    font-size: 24px;
    margin-bottom: 20px;
  }
  
  p {
    font-size: 18px;
    line-height: 1.5;
    margin-bottom: 20px;
  }