Index: gc_lang/fr/webext/content_scripts/panel.css
==================================================================
--- gc_lang/fr/webext/content_scripts/panel.css
+++ gc_lang/fr/webext/content_scripts/panel.css
@@ -80,11 +80,11 @@
     color: hsla(210, 0%, 100%, 1);
 }
 div.grammalecte_move_button {
     padding: 1px 5px;
     border-radius: 16px;
-    color: hsla(180, 0%, 100%, .5);
+    color: hsl(180, 0%, 100%);
     opacity: .5;
 }
 div.grammalecte_move_button_up {
     padding: 1px 10px;
     background: center no-repeat url('data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAwAAAAMCAYAAABWdVznAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsMAAA7DAcdvqGQAAAAYdEVYdFNvZnR3YXJlAHBhaW50Lm5ldCA0LjEuNv1OCegAAABcSURBVChTlY67DcAgDEQZhg3oGJMuA9CzoTlbcoQT8zvpFX7cSQQiusKVK1wJCkgfJ/wE4LImA/NuDjCWNWY0lh8wyzvScgW7yIjLTc6zZB7EG/RLx7hyhSvnUOgfudLrksye1QAAAABJRU5ErkJggg==');