<form class="md-form">

  <div class="file-field">

    <div class="btn btn-primary btn-sm float-left">

      <span>Choose file</span>

      <input type="file" required>

    </div>

    <div class="file-path-wrapper">

      <input class="file-path validate" type="text" placeholder="Upload your file">

    </div>

  </div>

</form>