OK, thanks.
In order not to create a new topic, please tell me a couple more points.
When accessing the mobile menu from the main page, the INFO drop-down menu appears as it should, with no gray background.
And if i open the same thing from the catalog page, then the menu has a gray background.
And the second question. How can I make the filter on the category page initially closed? It is always open on my phone and on my computer. From the phone, the filter opens with a button. But after switching to it, all the parameters are deployed there. How can you make them folded? To click on the desired one and then it will open.