Thanks everyone for the support you provided me.
In the end I used the solution to redefine a custom class and then add the CSS code, it’s easier.
As you can imagine, I am not familiar with php so creating a child theme and editing function.php file was something not so easy.
Anyway..thanks again, you can close the ticket

• This reply was modified 7 years, 7 months ago by bgiacomo.

Thank you but in this way I color all the icon boxes. I need just some specific icon boxes from a specific page.
I think I have to use id:

<class iconbox id=”myId”>…

.myId {
background: red !important;
}

But I can’t set an id in an icon box

https://ibb.co/i4GdRF (CHROME)
https://ibb.co/cXcJRF (FIREFOX)

As you can see using Chrome I cannot see the line close to the title: “Chi sono”, “Newsletter”..there is a white <hr> element which not appears on Chrome.

Regards,
Giacomo