node_modules/material-design-lite/src/textfield/snippets/textfield-text.html

<!-- Simple Textfield -->
<form action="#">
  <div class="mdl-textfield mdl-js-textfield">
    <input class="mdl-textfield__input" type="text" id="sample1">
    <label class="mdl-textfield__label" for="sample1">Text...</label>
  </div>
</form>