datahub/wherehows-web/app/templates/components/json-upload.hbs

<input
  type="file"
  accept=".json"
  style="display:none"
  id="{{uploadInputId}}">


<label for="{{concat elementId '-button'}}" class="nacho-uploader__label">
  <span class="nacho-uploader__cta">Do you have existing compliance metadata from a similar dataset? (Optional)</span>
  <span class="nacho-uploader__cta-subtext">We can apply metadata from a similar dataset to this dataset.</span>
</label>

<br>

<button
  id="{{concat elementId '-button'}}"
  class="nacho-button nacho-button--large-inverse nacho-uploader__button"
  onclick={{action "onUpload"}}>
  Choose File
</button>