fix style

Author: HoangTran0410

scripts/magnify_image.css

@@ -220,6 +220,11 @@
   opacity: 1;
 }
 
+#ufs-magnify-image-hover-div.hide {
+  opacity: 0;
+  display: block !important;
+}
+
 #ufs-magnify-image-hover-div.hide:not(:hover) {
   opacity: 0;
   transition: all 0.2s 2s ease;