Hello again. It is something strange I think there is something in the Astra theme that blocks the Css code. When I use it in the backend it works. However, it is not published on the website.
I must say that we have the astra pro version and I put the code in the customizer.
What element could block it?
Here I leave the URL https://robertojimeneznavas.com/tienda/
, Thank you very much.