diff --git a/p/themes/Ansum/_mobile.css b/p/themes/Ansum/_mobile.css
index 8ff09716b..358d11e18 100644
--- a/p/themes/Ansum/_mobile.css
+++ b/p/themes/Ansum/_mobile.css
@@ -4,7 +4,7 @@
 @media (max-width: 840px) {
 	.aside {
 
-		transition: all 0.2s ease-in-out;
+		transition: width 0.2s ease-in-out;
 
 		&.aside_feed {
 			padding: 0;
diff --git a/p/themes/Ansum/_mobile.rtl.css b/p/themes/Ansum/_mobile.rtl.css
index 28cdb2fca..899ce4d3d 100644
--- a/p/themes/Ansum/_mobile.rtl.css
+++ b/p/themes/Ansum/_mobile.rtl.css
@@ -4,7 +4,7 @@
 @media (max-width: 840px) {
 	.aside {
 
-		transition: all 0.2s ease-in-out;
+		transition: width 0.2s ease-in-out;
 
 		&.aside_feed {
 			padding: 0;
diff --git a/p/themes/Mapco/_mobile.css b/p/themes/Mapco/_mobile.css
index eaf8c7f21..e8fb2c795 100644
--- a/p/themes/Mapco/_mobile.css
+++ b/p/themes/Mapco/_mobile.css
@@ -4,7 +4,7 @@
 @media (max-width: 840px) {
 	.aside {
 
-		transition: all 0.2s ease-in-out;
+		transition: width 0.2s ease-in-out;
 
 		&.aside_feed {
 			padding: 0;
diff --git a/p/themes/Mapco/_mobile.rtl.css b/p/themes/Mapco/_mobile.rtl.css
index c3c186ca4..05fa875f0 100644
--- a/p/themes/Mapco/_mobile.rtl.css
+++ b/p/themes/Mapco/_mobile.rtl.css
@@ -4,7 +4,7 @@
 @media (max-width: 840px) {
 	.aside {
 
-		transition: all 0.2s ease-in-out;
+		transition: width 0.2s ease-in-out;
 
 		&.aside_feed {
 			padding: 0;