Border outside of the tab

[asmsaiff]

Here are a border outside of the tab design and there has a small rounded corder of the tab. How can I get rid of theme like second picture ?

I want like that -

[black7375]

You can use photon-style's setting.

Firefox-UI-Fix/user.js

Lines 32 to 57 in db99628

	// https://github.com/black7375/Firefox-UI-Fix/wiki/Options#important
	user_pref("userChrome.tab.connect_to_window", true); // Original, Photon
	user_pref("userChrome.tab.color_like_toolbar", true); // Original, Photon
	user_pref("userChrome.tab.lepton_like_padding", false); // Original
	user_pref("userChrome.tab.photon_like_padding", true); // Photon
	user_pref("userChrome.tab.dynamic_separtor", false); // Original, Proton
	user_pref("userChrome.tab.static_separator", true); // Photon
	user_pref("userChrome.tab.static_separator.selected_accent", false); // Just option
	user_pref("userChrome.tab.newtab_button_like_tab", false); // Original
	user_pref("userChrome.tab.newtab_button_smaller", true); // Photon
	user_pref("userChrome.tab.newtab_button_proton", false); // Proton
	user_pref("userChrome.icon.panel_full", false); // Original, Proton
	user_pref("userChrome.icon.panel_photon", true); // Photon
	user_pref("userChrome.icon.panel_sparse", false); // Just option
	// Original Only
	user_pref("userChrome.tab.box_shadow", false);
	user_pref("userChrome.tab.bottom_rounded_corner", false);
	// Photon Only
	user_pref("userChrome.tab.photon_like_contextline", true);
	user_pref("userChrome.rounding.square_tab", true);

[asmsaiff]

Thank you so much @black7375
It works.