body {
    font-family: Arial, sans-serif;
    background-color: #f8f9fa;
    margin: 0;
    padding: 0;
  }
  
  header {
    background-color: #007bff;
    color: white;
    padding: 20px;
    text-align: center;
  }
  
  .container {
    max-width: 900px;
    margin: 30px auto;
    padding: 20px;
    background-color: white;
    border-radius: 8px;
    box-shadow: 0 0 10px rgba(0,0,0,0.1);
  }
  
  h1, h2 {
    margin-top: 0;
  }
  
  .book-list {
    margin-bottom: 30px;
  }
  
  .book-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 15px;
    border-bottom: 1px solid #ddd;
  }
  
  .book-item:last-child {
    border-bottom: none;
  }
  
  form {
    display: flex;
    flex-direction: column;
  }
  
  label {
    margin-bottom: 8px;
    font-weight: bold;
  }
  
  input, select {
    padding: 10px;
    margin-bottom: 20px;
    border: 1px solid #ccc;
    border-radius: 4px;
  }
  
  button {
    padding: 12px;
    background-color: #28a745;
    color: white;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 16px;
  }
  
  button:hover {
    background-color: #218838;
  }
  .trolai{
   
    margin-top: 15px;
    padding: 10px;
    background-color: #ff00aa;
    color: rgb(47, 0, 255);
    border: none;
    border-radius: 4px;
    cursor: pointer;
   
  }
  .trolai:hover{
    background-color: #ff9900;
  }
.b1{
    text-decoration: none;
}