diff --git a/themes/compact_night.css b/themes/compact_night.css
index c9e98611549c277ea0d17663ba53780d856d4017..0e56dc5cc8fb1b57f67e8efbe444446632d28656 100644
--- a/themes/compact_night.css
+++ b/themes/compact_night.css
@@ -2076,12 +2076,6 @@ body.flat.ttrss_main .post .content img,
 body.flat.ttrss_main .cdm .content-inner img,
 body.flat.ttrss_main .post .content video,
 body.flat.ttrss_main .cdm .content-inner video {
-  transition: filter 0.25s linear;
-}
-body.flat.ttrss_main .post .content img:not(:hover),
-body.flat.ttrss_main .cdm .content-inner img:not(:hover),
-body.flat.ttrss_main .post .content video:not(:hover),
-body.flat.ttrss_main .cdm .content-inner video:not(:hover) {
   filter: saturate(0.9) brightness(0.8);
 }
 body.flat.ttrss_main .article-note {
diff --git a/themes/night.css b/themes/night.css
index c126dc7741c15a345e723dafc0b7e14c6e399c92..86e8f0a0fa529093e837b514e67f299c60cd2a97 100644
--- a/themes/night.css
+++ b/themes/night.css
@@ -2077,12 +2077,6 @@ body.flat.ttrss_main .post .content img,
 body.flat.ttrss_main .cdm .content-inner img,
 body.flat.ttrss_main .post .content video,
 body.flat.ttrss_main .cdm .content-inner video {
-  transition: filter 0.25s linear;
-}
-body.flat.ttrss_main .post .content img:not(:hover),
-body.flat.ttrss_main .cdm .content-inner img:not(:hover),
-body.flat.ttrss_main .post .content video:not(:hover),
-body.flat.ttrss_main .cdm .content-inner video:not(:hover) {
   filter: saturate(0.9) brightness(0.8);
 }
 body.flat.ttrss_main .article-note {
diff --git a/themes/night_base.less b/themes/night_base.less
index 5207088a9cc6c06be4c7451f01c258123d853e5b..76ea04a7f2b0385d36f902df45369b25dc02e89f 100644
--- a/themes/night_base.less
+++ b/themes/night_base.less
@@ -274,10 +274,6 @@ body.flat.ttrss_main {
 	.post .content,
 	.cdm .content-inner {
 		img, video {
-			transition : filter 0.25s linear;
-		}
-
-		img:not(:hover), video:not(:hover) {
 			filter: saturate(0.9) brightness(0.8);
 		}
 	}
diff --git a/themes/night_blue.css b/themes/night_blue.css
index 0ea7bed661fd62a000315b286c1ef30e536c1602..51c12baa3277333b4cb5084803d167b13b23fdbe 100644
--- a/themes/night_blue.css
+++ b/themes/night_blue.css
@@ -2077,12 +2077,6 @@ body.flat.ttrss_main .post .content img,
 body.flat.ttrss_main .cdm .content-inner img,
 body.flat.ttrss_main .post .content video,
 body.flat.ttrss_main .cdm .content-inner video {
-  transition: filter 0.25s linear;
-}
-body.flat.ttrss_main .post .content img:not(:hover),
-body.flat.ttrss_main .cdm .content-inner img:not(:hover),
-body.flat.ttrss_main .post .content video:not(:hover),
-body.flat.ttrss_main .cdm .content-inner video:not(:hover) {
   filter: saturate(0.9) brightness(0.8);
 }
 body.flat.ttrss_main .article-note {