Problem with Coding/ installing a button

I am installing a ‘button’ on my site that the user can click on that will take them to the video (as requested by the owner of the company- does not want the video embedded). It works on all of the pages except for 2. When I install the button into these 2 particular pages, the stationary background (a photo) disappears and turns white.

When I take the button and all involved out, the background re-appears.

Any thoughts as to why it may be doing that on only these two pages??

Any help is appreciated!