[Zerif Lite] Insert Element below Header

The website I’m working on is CollegeFootballPicks2016.com I’m trying to insert a contact form 7 form above the black and white background image at the top. I have the correct PHP code:
<?php echo do_shortcode( '[contact-form-7 id="23" title="CFP2016 Opt-In"]' ); ?>
I can get it to appear in the header part with the logo, but I can’t figure out what file it goes in to go just below the header, on top of that large image. Any help would be much appreciated.

Thanks