Customize firefox address bar and search bar length

By default, the menu bar, toolbar, bookmarks, and tag bar of Firefox occupy a lot of space, which greatly reduces the visible area of the entire browser. To this end, I will remove unused icons, then
Bookmarks, refresh before and after, address bar, search bar, historical address, download manager, page capture left, and route them to the same column using Firefox's custom functions. This is much better. But at the same time
The problem is that the bookmarks are hidden and only become one arrow. Each time you open the bookmarks, you need to open the key arrow and start the selection!
The length of the address bar and search bar can be adjusted, but it is always relative and cannot be solved. Finally, we can solve this problem by modifying the configuration file !! Haha!
The method is as follows:
In ~ /. Mozilla/Firefox/ukknu0cj. Default/Chrome/create the userchrome.css file, enter the content in the file and save it:
/* Fixed address bar length */
# Urlbar-container {max-width: 360px! Important}

/* Fixed length of the search bar */
# Search-container, # searchbar
{Max-width: 200px! Important ;}

Xxpx is the maximum length of the address bar and the search bar. After modifying the length according to your needs, click OK to pull the bookmarks. Haha!