Gap Between Header & Body

We have installed a header in the header.php file, but for some reason, there’s a gap between the header and the body of the page.
We are using the default theme. We have installed several headers and never had a problem. Here’s the image map if you’d like to see:

<img usemap="#header" width="800" style="border: none;" alt="header" src="https://www.foxydesigns.biz/images/header-links.jpg" height="285"/>

<map name="header">

<area shape="rect" coords="149,244,223,271" alt=""
href="https://foxydesigns.biz" title=""/>

<area shape="rect" coords="344,195,558,245" alt=""
href="https://foxydesigns.biz/?page_id=172" title=""/>

<area shape="rect" coords="409,245,510,270" alt=""
href="https://foxydesigns.biz/?page_id=174" title=""/>

<area a shape="rect" coords="538,245,659,270" alt=""
href="https://foxydesigns.biz/?page_id=167" title=""/>

</map></div>

Here’s the link to the site: https://foxydesigns.biz/
Any help would be greatly appreciated!