body {
    font-family: Arial, sans-serif;
    background-color: #f4eee6;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 550px;
  }
  
  .calculator {
    background-color: #fff;
    border: 5px solid #2248c7;
    border-radius: 8px;
    padding: 20px;
    box-shadow: 0 0 10px rgba(0, 0, 0, 100);
    text-align: center;
  }
  
  #calcButton {
    background-color: #2248c7;
    color: #fff;
    border: none;
    border-radius: 4px;
    padding: 10px 20px;
    cursor: pointer;
    transition: background-color 0.3s;
  }
  
  #calcButton:hover {
    background-color: #1c3ba1;
  }
  
  input[type="text"],
  select {
    width: 100px;
    margin: 5px;
    padding: 5px;
  }
  
  #result {
    font-weight: bold;
    margin-top: 10px;
  }
  
  #author {
    margin-top: 20px;
    font-style: italic;
    color: #868686;
  }