body {
    font-family: Arial, sans-serif;
    padding: 20px;
  }
  
  h1 {
    text-align: center;
  }
  
  .calculator {
    max-width: 400px;
    margin: 20px auto;
  }
  
  .calculator input {
    width: 100%;
    padding: 10px;
    margin-bottom: 10px;
  }
  
  .calculator button {
    display: block;
    margin: 0 auto;
    padding: 10px;
    background-color: #4CAF50;
    color: white;
    border: none;
    cursor: pointer;
  }
    
  #results {
    margin-top: 40px;
  }
  
  #table {
    width: 100%;
    border-collapse: collapse;
    margin-bottom: 20px;
  }
  thead {
    background-color: antiquewhite;
  }
  
  #table th, #table td {
    padding: 8px;
    border-bottom: 1px solid #ddd;
    text-align: center;
  }
  
  .chart-container {
    max-width: 600px;
    margin: 0 auto;
  }