Text and Color Background

Hi,I have read this support blog. I can’t find WP Tiles in the Style Sheet. I see it in the Plug In’s Editor. So, I have basic skills but can make the necessary adjustments.

Here is the page: http://jalcoaching.com/services/

I am finding difficulty removing the black bar and text to show the post titles. Having it removed will enable the image title to be seen.

Please advise, thank you.

https://wordpress.org/plugins/wp-tiles/