How to remove the left CSS file from the code, which gives the Mixed Content error in the browser?

Question

css

Hello!
In some browsers, I get an SSL security error "Mixed Content" due to the fact that I have the following code in the code of the main page of the site (it is not clear where it came from): I understand that the template is trying to call a style file, which should, in theory, be loaded over HTTP and due to this some browsers give a warning "Mixed Content" I have no idea how to remove this and in general where it comes from. BUT... Maybe it's from here templates/jp-x2/layouts/template.config.php There I found this: But I'm NOT SURE! Here's what I see in the Chromium browser under Ubuntu 16.04 when I press F12:
<link rel="stylesheet" href="css:style.css" />
$this['asset']->addFile('css', 'css:style.css');

Answer 1

UPDATE
The template developer advised me to create an empty css/custom.css file and thus solve the problems. The question is how to do it. And besides, there I have a call to a file called "style.css", and here I will have "custom.css". Or is that how it should be?
I created a new file through the Template Manager called style.css. By the way, this is not custom.css at all, but style.css. Firstly, the custom.css file has been there for a long time with different parameters, and secondly, the call goes to a file named style.css Anyway, the problem is solved. You can close this thread.