* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
  }
  
  body, html {
    height: 100%;
    font-family: Arial, sans-serif;
  }
  
  body {
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    background-color: #f7f7f7;
  }
  
  header {
    text-align: center;
    padding: 20px;
    background-color: #28a745;
    color: white;
  }
  
  main {
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    background-color: #f1f1f1;
    padding: 20px;
  }
  
  .balance-section {
    font-size: 36px;
    margin-bottom: 40px;
    text-align: center;
  }
  
  .balance-section p {
    margin-top: 10px;
    font-size: 18px;
  }
  
  #last-deposit, #last-withdrawal {
    font-weight: bold;
    color: #007bff;
  }
  
  /* Styling for last deposit and last withdrawal */
  .last-transaction {
    margin-top: 10px;
    font-size: 20px;
    color: #333;
    padding: 10px;
    background-color: #e9ecef;
    border-radius: 8px;
  }
  
  #last-deposit {
    color: #28a745;
  }
  
  #last-withdrawal {
    color: #dc3545;
  }
  
  .transaction-section {
    width: 100%;
    max-width: 500px;
    display: flex;
    justify-content: space-between;
  }
  
  .transaction-section div {
    flex: 1;
    margin: 0 10px;
  }
  
  input {
    width: 100%;
    padding: 15px;
    margin-top: 10px;
    border-radius: 4px;
    border: 1px solid #ddd;
    font-size: 18px;
  }
  
  button {
    padding: 15px;
    width: 100%;
    background-color: #28a745;
    color: white;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 18px;
    margin-top: 10px;
  }
  
  button:hover {
    background-color: #218838;
  }
  
  footer {
    text-align: center;
    padding: 20px;
    background-color: #333;
    color: white;
  }
  
  @media (max-width: 768px) {
    .transaction-section {
      flex-direction: column;
      align-items: center;
    }
  
    .transaction-section div {
      margin: 10px 0;
    }
  }