Gimp Imagemap not responsive in WordPress.

I have copied and pasted the page content from a Drupal page to a WordPress page. On this page, we have an imagemap created with Gimp.

On the Drupal version of the page, the imagemap is responsive. The coordinates for each different area with a hover link scales correctly at smaller screen widths.

The same exact code on the WordPress version of the page produces an imagemap where the coordinates do not scale. If you view the WordPress page on a mobile phone the areas with the hover links keep using the coordinates based on the image displaying at full screen width.

Any idea how to remedy this? This is very curious behavior that I can’t explain. Thanks for any assistance anyone can provide.

The page I need help with: [log in to see the link]