Remove top margin and padding from entry content by default.

varia/inc/style-wpcom.css

@@ -16,6 +16,11 @@
 	display: none;
 }
 
+.home.page.hide-homepage-header .entry-content {
+	margin-top: 0;
+	padding-top: 0;
+}
+
  /**
  * Hide footer navigation on the homepage
  */