body {
    font-family: 'Arial', sans-serif;
    background-color: #f7f8fa;
    margin: 0;
    padding: 40px 20px;
  }
  
  .login-box {
    background: white;
    padding: 30px 40px;
    border-radius: 15px;
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.1);
    text-align: center;
    max-width: 300px;
    margin: 0 auto;
  }
  
  .login-box input {
    padding: 10px;
    margin-top: 10px;
    width: 100%;
    font-size: 16px;
  }
  
  .login-box button {
    margin-top: 15px;
    padding: 10px 20px;
    font-size: 16px;
    background-color: #2ecc71;
    color: white;
    border: none;
    border-radius: 5px;
    cursor: pointer;
  }
  
  #main-content {
    display: none;
    margin-top: 40px;
    width: 100%;
    flex-direction: column;
    align-items: center;
  }
  
  .card {
    background-color: #ffffff;
    padding: 30px 40px;
    border-radius: 20px;
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.1);
    width: 100%;
    max-width: 600px;
    margin-bottom: 40px;
    text-align: left;
    position: relative;
  }
  
  .network-header {
    display: flex;
    align-items: center;
    margin-bottom: 20px;
  }
  
  .network-header img {
    width: 30px;
    height: 30px;
    margin-right: 10px;
  }
  
  .logo {
    width: 120px;
    height: 120px;
    object-fit: cover;
    border-radius: 50%;
    margin-bottom: 20px;
  }
  
  h2 {
    margin: 0;
    color: #333;
    font-size: 20px;
  }
  
  .info {
    font-size: 16px;
    color: #555;
    margin-top: 15px;
    border-top: 1px solid #eee;
    padding-top: 10px;
  }
  
  .highlight {
    color: #2ecc71;
    font-weight: bold;
  }
  
  .loading {
    color: #999;
    font-style: italic;
  }

  .transaction-box {
    background-color: #f0fff5;
    padding: 20px;
    border-radius: 16px;
    margin-top: 10px;
    box-shadow: inset 0 0 6px rgba(46, 204, 113, 0.2);
    text-align: center;
  }
  
  .transaction-box .amount {
    font-size: 28px;
    font-weight: bold;
    color: #2ecc71;
  }
  
  .transaction-box .timestamp {
    margin-top: 10px;
    font-size: 18px;
    color: #555;
  }