body {
    font-family: 'Arial', sans-serif;
    margin: 0;
    padding: 20px;
    background: linear-gradient(to right, #a1c4fd, #c2e9fb); /* Updated background gradient */
  }
  
  .container {
    max-width: 800px;
    margin: 0 auto;
    padding: 20px;
    background: #fff;
    border-radius: 15px;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.15);
    animation: fadeIn 1s ease-in-out;
  }
  
  h1 {
    text-align: center;
    color: #1e90ff; /* Updated blue heading color */
    margin-bottom: 20px;
  }
  
  .custom-select {
    width: 100%;
    padding: 10px;
    margin-top: 10px;
    border-radius: 5px;
    border: 1px solid #ddd;
    background: #f0f0f0;
  }
  
  #truth-table {
    margin-top: 20px;
  }
  
  #kmap-container {
    display: flex;
    flex-wrap: wrap;
    border: 1px solid #ddd;
    padding: 10px;
    background: #f9f9f9;
    margin-top: 20px;
    border-radius: 10px;
  }
  
  #kmap-container div {
    border: 1px solid #ddd;
    width: 60px;
    height: 60px;
    margin: 5px;
    text-align: center;
    line-height: 60px;
    font-size: 16px;
    background-color: #e0f7fa;
    border-radius: 5px;
  }
  
  .btn {
    display: block;
    width: 100%;
    padding: 15px;
    margin-top: 20px;
    background-color: #1e90ff;
    color: white;
    font-size: 16px;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    transition: background-color 0.3s;
  }
  
  .btn:hover {
    background-color: #1c86ee;
  }
  
  #solution {
    font-weight: bold;
    margin-top: 20px;
    text-align: center;
    color: #1e90ff; /* Blue color for solution */
  }
  
  .about {
    background-color: #fff;
    padding: 30px;
    margin-top: 40px;
    border-radius: 10px;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
  }
  
  .about h2 {
    color: #1e90ff; /* Updated blue heading color */
    font-size: 24px;
    margin-bottom: 15px;
  }
  
  .about p {
    color: #666;
    line-height: 1.6;
  }
  
  /* Custom animations */
  @keyframes fadeIn {
    0% { opacity: 0; transform: translateY(-20px); }
    100% { opacity: 1; transform: translateY(0); }
  }
  
  @keyframes fadeInUp {
    0% { opacity: 0; transform: translateY(20px); }
    100% { opacity: 1; transform: translateY(0); }
  }