Как сделать адаптивное текстовое поле в заголовке с помощью MDL?

<div class = "mdl-layout mdl-js-layout mdl-layout--fixed-header">
  <header class = "mdl-layout__header">
    <div class = "mdl-layout__header-row">
      <!-- Title -->
      <span class = "mdl-layout-title">FyBox</span>

      <!-- Expandable Textfield -->
      <form action = "#">
        <div class = "mdl-card card-search">
          <div class = "mdl-textfield mdl-js-textfield txt-search">
            <input class = "mdl-textfield__input txtSearch" type = "text" id = "sample1"> @*
            <input type = "text" id = "sample1" class = "txtSearch" />*@
            <label class = "mdl-textfield__label lbl-search" for = "sample1">Search</label>
          </div>
        </div>

      </form>
      <!-- Add spacer, to align navigation to the right -->
      <div class = "mdl-layout-spacer"></div>
      <!-- Navigation. We hide it in small screens. -->
      <nav class = "mdl-navigation mdl-layout--large-screen-only">
        <a class = "mdl-navigation__link" href = "">Home</a>
        <a class = "mdl-navigation__link" href = "">About US</a>
        <a class = "mdl-navigation__link" href = "">Contact US</a>
        <a class = "mdl-navigation__link" href = "">Search</a>
      </nav>
    </div>
  </header>
  <!--  Filters, it will show when the screen is small-->
  <div class = "mdl-layout__drawer mdl-layout--small-screen-only">
    <span class = "mdl-layout-title">Title</span>
    <nav class = "mdl-navigation">
      <a class = "mdl-navigation__link" href = "">Link</a>
      <a class = "mdl-navigation__link" href = "">Link</a>
      <a class = "mdl-navigation__link" href = "">Link</a>
      <a class = "mdl-navigation__link" href = "">Link</a>
    </nav>
  </div>
  <main class = "mdl-layout__content">
    <div class = "page-content">
      <!-- Your content goes here -->
    </div>
  </main>
</div>