See the Code - See it Full Page - See Details
Test for [filter functions for images](https://www.w3.org/TR/2014/WD-filter-effects-1-20141125/#FilterCSSImageValue) As referenced by AmeliaBR on this CSS Tricks article about [filters on individual background images](https://css-tricks.com/apply-a-filter-to-a-background-image/#comment-1652505)
This Pen uses: HTML, CSS, JavaScript, and