I'm trying to edit a style but no achievement in the changes. How should I do?

@julian @gotwf Yes, I have reset it and have it rebuilt. But nothing, I think it's something of the template that is not. Where can I edit the theme?

I tried to put the search on my site, I activated the plugin once installed but it does not come out, that is, it can not be seen and I can not access it. How can I solve it? I use the awge theme