I'm not sure what this selector was used for. You can see the current implementation or the urlbar-container here:

• https://dxr.mozilla.org/mozilla-release/source/browser/base/content/browser.xul#888

Thank you cor-el.

I just want to add a 3px margin to the urlbar-textbox (on the left).. I've tried various combinations but none works.

Can you please try it?

<strike>That is between the Control Center 'i' icon and the text box ?</strike> I assume that you want some margin at the end of the text before the icon that appear at the right.

Can you attach a screenshot to show how it currently is?

• https://support.mozilla.org/en-US/kb/how-do-i-create-screenshot-my-problem
• use a compressed image type like PNG or JPG to save the screenshot

Try this code:

.urlbar-input-box  { margin-inline-end: 3px !important; }

Hello cor-el,

My Firefox is RTL (Hebrew).

I wanted to add a margin before the address.

.urlbar-textbox-container { margin-inline-end: 3px !important; }

used to work prior to FF 66.

I've actually tried

.urlbar-input-box { margin-inline-end: 3px !important; }

but it didn't work.

It turns out it should be "margin-inline-start" or ""margin-left".

.urlbar-input-box { margin-left: 3px !important; }

works.

Thank you very much. I appreciate your help.