Index: wp-content/themes/twentythirteen/rtl.css
===================================================================
--- wp-content/themes/twentythirteen/rtl.css	(revision 24423)
+++ wp-content/themes/twentythirteen/rtl.css	(working copy)
@@ -221,19 +221,6 @@
 	display: inline;
 }
 
-.gallery-columns-1 .gallery-item:nth-of-type(1n),
-.gallery-columns-2 .gallery-item:nth-of-type(2n),
-.gallery-columns-3 .gallery-item:nth-of-type(3n),
-.gallery-columns-4 .gallery-item:nth-of-type(4n),
-.gallery-columns-5 .gallery-item:nth-of-type(5n),
-.gallery-columns-6 .gallery-item:nth-of-type(6n),
-.gallery-columns-7 .gallery-item:nth-of-type(7n),
-.gallery-columns-8 .gallery-item:nth-of-type(8n),
-.gallery-columns-9 .gallery-item:nth-of-type(9n) {
-	margin-left: 0;
-	margin-right: 4px;
-}
-
 
 /**
  * 5.5 Post Formats
@@ -682,6 +669,19 @@
 }
 
 @media (max-width: 643px) {
+	.sidebar .entry-header,
+	.sidebar .entry-content,
+	.sidebar .entry-summary,
+	.sidebar .entry-meta,
+	.sidebar .comment-list,
+	.sidebar .comment-navigation,
+	.sidebar .featured-gallery,
+	.sidebar .post-navigation .nav-links,
+	.sidebar .format-image .entry-content {
+		padding-left: 20px;
+		padding-right: 20px;
+	}
+
 	#content .format-status .entry-content,
 	#content .format-status .entry-met {
 		padding-left: 0;
@@ -745,21 +745,26 @@
 	.archive .format-gallery .gallery-item,
 	.search .format-gallery .gallery-item,
 	.single .gallery.gallery-columns-3 .gallery-item:nth-of-type(even),
+	.gallery-columns-3 .gallery-item:nth-of-type(3n),
 	.gallery-columns-5 .gallery-item:nth-of-type(5n),
 	.gallery-columns-7 .gallery-item:nth-of-type(7n),
 	.gallery-columns-9 .gallery-item:nth-of-type(9n) {
-		margin-left: 2%;
+		margin-left: 4px;
 		margin-right: auto;
 	}
 
 	.blog .format-gallery .gallery-item:nth-of-type(odd),
 	.archive .format-gallery .gallery-item:nth-of-type(odd),
 	.search .format-gallery .gallery-item:nth-of-type(odd),
-	.single .gallery .gallery-item:nth-of-type(even),
-	.single .gallery.gallery-columns-3 .gallery-item:nth-of-type(3n) {
+	.single .gallery .gallery-item:nth-of-type(even) {
 		margin-left: 0;
 		margin-right: auto;
 	}
+
+	.comment-author .avatar {
+		margin-left: 5px;
+		margin-right: auto;
+	}
 }
 
 
Index: wp-content/themes/twentythirteen/style.css
===================================================================
--- wp-content/themes/twentythirteen/style.css	(revision 24423)
+++ wp-content/themes/twentythirteen/style.css	(working copy)
@@ -2761,10 +2761,6 @@
 		padding-right: 0;
 	}
 
-	.sidebar.author .author-info {
-		padding: 30px 0 10px;
-	}
-
 	.sidebar .site-info,
 	.search.sidebar .page-content,
 	.blog.sidebar .page-content,
@@ -2879,7 +2875,7 @@
 	.blog.sidebar .page-content,
 	.sidebar .post-navigation .nav-links,
 	.paging-navigation .nav-links,
-	.author .author-info,
+	#content .author-info,
 	.comments-area .comments-title,
 	.comments-area .comment-list,
 	.comments-area .comment-navigation,
@@ -3049,10 +3045,10 @@
 	.blog .format-gallery .gallery-item,
 	.archive .format-gallery .gallery-item,
 	.search .format-gallery .gallery-item {
-		margin-bottom: 2%;
-		margin-right: 2%;
 		max-width: none;
 		width: 49%;
+		width: -webkit-calc(50% - 4px);
+		width:         calc(50% - 4px);
 	}
 
 	.single .gallery-columns-1.gallery-size-medium,
@@ -3069,17 +3065,19 @@
 	.archive .format-gallery .gallery-item:first-child,
 	.search .format-gallery .gallery-item:first-child {
 		text-align: center;
-		width: 100%;
+		width: 98%;
+		width: -webkit-calc(100% - 4px);
+		width:         calc(100% - 4px);
 	}
 
 	.gallery-columns-3 .gallery-item:nth-of-type(3n),
 	.gallery-columns-5 .gallery-item:nth-of-type(5n),
 	.gallery-columns-7 .gallery-item:nth-of-type(7n),
 	.gallery-columns-9 .gallery-item:nth-of-type(9n) {
-		margin-right: 2%;
+		margin-right: 4px;
 	}
 
-	.single .gallery br {
+	.gallery br {
 		display: none;
 	}