I need to create a child theme, in order to make several 4

Hi,

I need to create a child theme, in order to make several 4 changes for the theme. I've create the child theme, based on the "Libre" theme by automattic.

I have google how to make the changes, but anything seems to work.

Ive attached a screenshot where you can find the changes that i need, in the files of the child theme