fix (#4696)

p/themes/base-theme/frss.css

@@ -2062,7 +2062,7 @@ input:checked + .slide-container .properties {
 	.aside {
 		position: fixed;
 		top: 0; bottom: 0;
-		left: 0;
+		left: -1px;
 		width: 0;
 		overflow: hidden;
 		z-index: 100;

p/themes/base-theme/frss.rtl.css

@@ -2062,7 +2062,7 @@ input:checked + .slide-container .properties {
 	.aside {
 		position: fixed;
 		top: 0; bottom: 0;
-		right: 0;
+		right: -1px;
 		width: 0;
 		overflow: hidden;
 		z-index: 100;