JSFiddle - React, Tailwind, and code Playground

HTML

<script src="https://cdnjs.cloudflare.com/ajax/libs/html2pdf.js/0.8.1/html2pdf.bundle.js"></script>
<form id="element-to-print" action=method type="text/plain">

  <label for="fname">Adı</label>
  <input type="text" id="fname" name="firstname" placeholder="Adınız">

  <label for="lname">Soyadı</label>
  <input type="text" id="lname" name="lastname" placeholder="Soyadınız">

  <label for="country">Başvurulacak Birim</label>
  <select id="country" name="country">
    <option value="australia">Pazarlama</option>
    <option value="canada">Sosyal Medya Yönetimi</option>
    <option value="usa">Ürün Tasarımı</option>
  </select>

  <label for="subject">Subject</label>
  <textarea id="subject" name="subject" placeholder="Burada kendinizi tanıtın..." style="height:200px"></textarea>

  <input type="button" onclick="Fonksiyon();" value="İNDİR">

</form>
<script>
function Fonksiyon() {
  var element = document.getElementById('element-to-print');
  html2pdf(element);
}

</script>