#tdc-calculator{max-width:500px;margin:auto;font-family:Arial,sans-serif}#tdc-calculator label{display:block;margin-top:10px}#tdc-calculator input,#tdc-calculator select{width:100%;padding:8px;margin-top:5px;box-sizing:border-box}#tdc-calculator button{margin-top:15px;padding:10px;width:100%;background-color:#0073aa;color:#fff;border:none;cursor:pointer}#tdc-results{margin-top:20px;padding:10px;background:#f9f9f9;border-radius:5px}