Can this css effect be converted to use on GPP?

Hi

I have been trying for 2 days now, to make this effect on my website

https://codepen.io/ines/pen/NXbmRO Im using the elements for creating a header image thats getting the featured image, i then added a text on top of that image with a user defined field. I then gave the element a custom class. And then i tried converting that css effect to that class. But meh i cannot get it to work correctly im not skilled enough. Can anybody from GPP convert that css to a working solution for me if i donate a little :) ?

Again, Thanks for GPP its the best template i have ever used, and i have spent more than 2000 usd on themeforest, never doing that again :)