diff --git a/src/wp-content/themes/twentythirteen/style.css b/src/wp-content/themes/twentythirteen/style.css
index 5773c0076b..d037969110 100644
--- a/src/wp-content/themes/twentythirteen/style.css
+++ b/src/wp-content/themes/twentythirteen/style.css
@@ -1797,7 +1797,7 @@ footer.entry-meta {
 }
 
 .attachment .entry-attachment,
-.attachment p.attachment {
+.attachment .type-attachment p {
 	margin: 0 auto;
 	max-width: 724px;
 	text-align: center;
@@ -1821,6 +1821,10 @@ footer.entry-meta {
 	margin: 0;
 }
 
+.attachment .site-main .sidebar-container {
+	display: none;
+}
+
 
 /**
  * 5.7 Post/Paging Navigation