How to hide the default left menu?

Hello
My friends don’t know about programming at all. Please guide how to hide the left menu by default on all pages

If you mean you want to show all menu items on top, read help file topic: Tools → Menu Editor → Navbar Item.

I meant the Sidebar nav is expanded by default when I open the website and I want it to be collapsed by default, and I guess the html is combined with bootstrap. I need help with changing it to collapse by default but I don’t where to changethe code and how to change it. I found a part in HTML …should replace navbar-expand with navbar-collapse? or I should do something else? If I am right, how am I supposed to edit the HTML code?because I couldn’t find any place to edit it.

Try Tools → Advanced Settings → AdminLTE layout class = “sidebar-collapse”. See if this is what you want.

It worked. I appreciate your help. You’re a life saver.