Inspect Firefox DOM components

[Benedict, Stew]

How does one go about inspecting Firefox's own DOM/css to tweak appearance these days (ESR 91.6 RHEL7)?

I thought in the past I could use the inspector to inspect Firefox's own window.

In particular, we want to suppress the visibility of the urlbar and the sandwich menu.  The userChrome.css I was using before (68.2, we're very slow to update) is not working:

/* Remove the UI "sandwich" button */

#PanelUI-menu-button

{

    display: none !important;

}

/* Remove the urlbar */

#urlbar

{

    display: none !important;

}

Thanks!

Stew Benedict

Engineer IT III
Stewart....@signetjewelers.com

p 330-665-6588 | 375 Ghent Rd.

                              | Akron, Ohio 44333

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[Mike Kaply]

You need to turn on chrome debugging.

https://developer.mozilla.org/en-US/docs/Tools/Browser_Toolbox

Mike

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[Benedict, Stew]

Thanks. I knew I was missing something. Will update my notes.

Looks like I have the right naming, at least for the menu. urlbar looks like it's urlbar-container, which I also saw in prefs.js and tried. Will have to try and work out why they don't seem to be getting hidden. I did find your response from 2 years ago suggesting setting height 0px.

Stew Benedict

Engineer IT III
Stewart....@signetjewelers.com

p 330-665-6588 | 375 Ghent Rd.

                              | Akron, Ohio 44333

---

From: Mike Kaply <mka...@mozilla.com>
Sent: Friday, March 11, 2022 6:26 PM
To: Benedict, Stew <Stewart....@signetjewelers.com>
Cc: enter...@mozilla.org <enter...@mozilla.org>
Subject: Re: [Mozilla Enterprise] Inspect Firefox DOM components

 

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https://developer.mozilla.org/en-US/docs/Tools/Browser_Toolbox

Mike