Thanks a lot! All solved.
Just in case it can help anyone, I realized the style of the filters titles can only be edited by defining a textformat in the section "filter" and not by editing the colours in the section "style".
Dear @NDT
Custom CSS:
#footer-region{
z-index:10;
background-color:white;
}
Result:
[image: 1645485377294-screen-shot-2022-02-22-at-12.14.35-pm-resized.png]
https://laytheme.com/documentation/custom-css-styling.html
best wishes and have a wonderful day ✨
Richard