Update date

Author: Izheil

CSS tweaks/Tabs/Tab-close-button-only-on-hover.as.css

@@ -1,6 +1,6 @@
 /* You can find an updated version here: https://github.com/Izheil/Quantum-Nox-Firefox-Dark-Full-Theme */
 /* Made by Izheil */
-/* Last updated: 19/12/2020 */
+/* Last updated: 10/05/2023 */
 
 /* Tab close button visible only on hover */
 #tabbrowser-tabs .tabbrowser-tab:not([pinned]) .tab-close-button {