diff --git a/chrome/non_floating_sharp_tabs.css b/chrome/non_floating_sharp_tabs.css
index d3178ce..8660d30 100644
--- a/chrome/non_floating_sharp_tabs.css
+++ b/chrome/non_floating_sharp_tabs.css
@@ -78,5 +78,13 @@ See the above repository for updates as well as full license text. */
   background-color: highlight;
   background-image: linear-gradient(var(--tab-line-color),var(--tab-line-color));
 }
+/* Photon-like tab on hover animation for the top line */
+@keyframes tab-line-anim{ from{ margin-inline: 20px } to { margin-inline: 0 } }
+.tab-background::before{ animation: tab-line-anim 160ms }
+
+/* Disable animation for selected and pinned tabs */
+.tabbrowser-tab[pinned] > .tab-stack > .tab-background::before,
+.tab-background[selected]{ animation: none }
+
 /* moves context-line to the bottom */
 .tab-context-line{ -moz-box-ordinal-group: 2; margin-inline: 10px !important; }
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