diff --git a/thunderbird/userChrome.css b/thunderbird/userChrome.css
new file mode 100644
index 0000000..d2b1125
--- /dev/null
+++ b/thunderbird/userChrome.css
@@ -0,0 +1,20 @@
+body.layout-vertical {
+/*	font-family: Roboto; */
+	font-family: 'Inter';
+}
+
+.thread-card-container {
+	margin: 0.75rem auto;
+}
+
+tr[is="thread-row"] {
+	height: 20px !important;
+	background-color: var(--tag-color, 'white');
+	color: black !important;
+}
+
+tr.selected[is="thread-row"] {
+/*	font-family: 'Times New Roman' !important; */
+	border: 2px solid black !important;
+	background-color: 'yellow' !important;
+}
\ No newline at end of file