diff --git a/chrome/tabs_fill_available_width.css b/chrome/tabs_fill_available_width.css
new file mode 100644
index 0000000..6aef0f4
--- /dev/null
+++ b/chrome/tabs_fill_available_width.css
@@ -0,0 +1,2 @@
+/* Why 100vw? Tab closing requires width animation to end and "none" can't be animated */
+.tabbrowser-tab[fadein]{ max-width: 100vw !important }
\ No newline at end of file