body, div, input, label, select, button, span {
    font-family: Arial, Helvetica, sans-serif;
    font-size: 16px;
    box-sizing: border-box;
    margin: 0;
    padding: 0;
  }
  
  .calculator-container {
    background-color: white;
    width: 80%;
    max-width: 400px;
    margin: 20px auto;
    padding: 20px;
    border-radius: 20px;
    box-shadow: 0 0 5px #ccc;
  }
  
  .input-container {
    display: flex;
    justify-content: center;
    align-items: center;
    margin-bottom: 10px;
  }
  
  .input-container label {
    width: 30%;
    text-align: right;
    margin-right: 5%;
  }
  
  .input-container input[type="time"], .input-container select {
    width: 35%;
    padding: 5px;
    font-family: 'Roboto', sans-serif;
    font-size: 1rem;
    border: 1px solid #cfd1d8;
    border-radius: 3px;
    outline: none;
  }
  
  #button-container {
    display: flex;
    justify-content: center;
    margin-top: 20px;
  }
  
  #button-container button {
    padding: 10px;
    border: 0;
    color: #fff;
    font-size: 16px;
    background: #084288;
    border-radius: 3px;
    margin: 0 10px;
  }
  
  #button-container button:hover {
    background-color: #434c6d;
  }
  
  #result {
    text-align: center;
    margin-top: 20px;
  }
  
  .help-icon {
    display: inline-block;
    position: relative;
    cursor: help;
  }
  
  .help-icon:before {
    content: '?';
    display: inline-block;
    width: 20px;
    height: 20px;
    text-align: center;
    background: #084288;
    color: #fff;
    border-radius: 50%;
    line-height: 20px;
    font-weight: bold;
  }
  
  .help-icon:hover .disclaimer {
    display: block;
  }
  
  .disclaimer {
    display: none;
    position: absolute;
    bottom: 25px;
    left: 25px;
    background-color: #f9f9f9;
    border: 1px solid #ccc;
    padding: 15px;
    width: 300px;
    z-index: 1;
  }