Change to fix issues 2251 (#2301)

* Change to fix issues 2251

This is a proposed change to fix issue https://github.com/FreshRSS/FreshRSS/issues/2251

* Remove comments

p/themes/base-theme/template.css

@@ -685,10 +685,11 @@ br {
 #bigMarkAsRead {
 	display: block;
 	width: 100%;
-	padding: 1em 0 100% 0;
-	padding: 1em 0 100vh 0;
 	text-align: center;
 	font-size: 1.4em;
+	padding: 1em 0 50px 0;
+	margin: 0 0 100% 0;
+	margin: 0 0 100vh 0;
 }
 .bigTick {
 	font-size: 4em;