commit 0dcd5d2e2feb6ad5feee58e09f044687a7420ace
Author: Juhani Krekelä <juhani@krekelä.fi>
Date:   Sat Jun 5 14:54:08 2021 +0300

    First commit

diff --git a/userChrome.css b/userChrome.css
new file mode 100644
index 0000000..15b2c42
--- /dev/null
+++ b/userChrome.css
@@ -0,0 +1,71 @@
+/* Built based on https://github.com/black7375/Firefox-UI-Fix/tree/photon-style */
+@media (-moz-proton) {
+	/* Make tab bar shorter */
+	#TabsToolbar {
+		--tab-min-height: 33px !important;
+	}
+	#scrollbutton-up, #scrollbutton-down {
+		padding-top: 0px !important;
+		padding-bottom: 0px !important;
+	}
+
+	/* Make selected tab join the toolbar */
+	.tab-background {
+		border-radius: 0px !important;
+		margin: 0px !important;
+	}
+
+	.tabbrowser-tab[visuallyselected] {
+		border-width: 1px 1px 0px 1px !important;
+		border-style: solid !important;
+		border-color: hsla(240,5%,5%,.35) !important;
+	}
+
+	/* No space between tabs */
+	.tabbrowser-tab {
+		padding: 0px !important;
+		border: 0px !important;
+	}
+
+	/* Put faint lines between tabs */
+	.tabbrowser-tab::before {
+		content: "";
+		display: block;
+		border-right: 1px solid hsla(240,5%,5%,.35) !important;
+		margin-block: 5px 5px !important;
+	}
+
+	.tabbrowser-tab[visuallyselected]::before,
+	.tabbrowser-tab[visuallyselected] + .tabbrowser-tab::before,
+	.tabbrowser-tab:first-of-type::before {
+		border-right: none !important;
+	}
+
+	/* Disable media labels */
+	.tab-secondary-label:is([soundplaying], [muted], [activemedia-blocked], [pictureinpicture]){
+		display: none !important;
+	}
+
+	/* Always show favicon */
+	.tab-icon-image {
+		opacity: 1 !important;
+	}
+
+	/* Move tab overlay icons to be an overlay */
+	.tab-icon-overlay {
+		top: -3.5px !important;
+		left: 9px !important;
+		width: 20px !important;
+		height: 20px !important;
+		z-index: 1 !important;
+		opacity: 1 !important;
+	}
+
+	/* Show PIP icon */
+	.tab-icon-sound[pictureinpicture] {
+		display: -moz-inline-box !important;
+		width: 14px;
+		height: 14px;
+		list-style-image: url(chrome://global/skin/media/picture-in-picture-open.svg);
+	}
+}