@namespace url("http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul"); /* numbers are adjustable */

#urlbar-container { max-width: 400px !important; }

#search-container { max-width: 200px !important; }

This is a Solution. As of version 69 Mozilla Firefox no longer auto searches for custom scripts IE: userChrome.css (see below for more info) that reduce the width of the address bar once placed in the Firefox ''Profile'' folder. In order to do that create a Folder named ''chrome'' on the desktop. Step two: Create a .TXT file, rename the Extention from ''.txt'' to ''css'' rename it ''userChrome.css" and place into the ''Profile'' folder with the following Code <pre><nowiki>@namespace url("http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul"); /* numbers are adjustable */ #urlbar-container { max-width: 400px !important; } #search-container { max-width: 200px !important; }</nowiki></pre> In order to Locate the folder, If your Firefox was installed by .EXE file the ''Profiles" folder will not the Program Files Folder (In order to locate it 1. Hit the Windows button Lower left 2. Hit ''This PC'' 3. Locate C Drive 4. Go to Users, Find the name you named your PC 4. AppData 5. Roaming 6. Mozilla 7. Firefox 8. Profiles) unless you are using the ''Portable version" in which case the ''Profile'' folder is in the ''Data'' Folder. Or just search for ''Mozilla" to find the Data folder from there, then open the Profile folder. The scripts still works, again as mentioned on the 1st line of this post, As of version 69 Mozilla Firefox no longer auto searches for custom scripts IE: userChrome.css. So you will have to enable it to do so, or it won't work. In order to do that (1) Open a new tab, type or paste about:config in the address bar and press Enter/Return. Click the button accepting the risk. (2) In the search box above the list, type or paste the word ''userprof'' if it's disabled, double click it to enable it. (3) In the search box above the list, search for ''toolkit.legacyUserProfileCustomizations.stylesheets'' preference is not already set to true, double-click it to switch the value from false to true. (4) Close Mozilla Firefox (5) Insert the ''chrome'' folder you created it into the Firefox Profile folder (Tips on how to find that folder, above). (6) Insert the userChrome.css file with the code in it (Instructions above) into the chrome folder in Profile folder. (7) Open Firefox. Sidenotes. The numbers located in the userChrome.css file are adjustable. If your URL/Adress Bar are too long or short, lower the number incrementally to suite your preference. This is a working Tutorial as of Firefox 70.0.01 I thought i'd take time to create this because I had much difficulty trying to find the solution. Hope this helps. I think having the transparency of the entire address on the Browsers is a potential violation of Privacy.