Add the following HTML to your site.

IMPORTANT: Replace {{url}} with the url to your ScreenSteps site.

<form accept-charset="UTF-8" action="{{ url }}/searches"method="get">
 \ <div style="margin:0;padding:0;display:inline"><input name="utf8" type="hidden" value="✓"></div>
  <input name="text" title="Enter a keyword or topic to search" type="text">
 \ <input name="commit" type="submit" value="Search">
</form>

You can add any additional classes or styling that you would like. When the user submits the form they will be taken to your ScreenSteps sit to see results.