Fix gallery wide alignment.

seedlet/assets/css/ie.css

@@ -2362,7 +2362,7 @@ object {
 }
 
 .wp-block-gallery {
-	margin: 0;
+	margin: 0 auto;
 }
 
 .wp-block-gallery .blocks-gallery-image figcaption {

seedlet/assets/sass/blocks/gallery/_style.scss

@@ -1,6 +1,6 @@
 .wp-block-gallery {
 
-	margin: 0;
+	margin: 0 auto;
 
 	.blocks-gallery-image,
 	.blocks-gallery-item {

seedlet/style-rtl.css

@@ -1490,7 +1490,7 @@ object {
 }
 
 .wp-block-gallery {
-	margin: 0;
+	margin: 0 auto;
 }
 
 .wp-block-gallery .blocks-gallery-image figcaption,

seedlet/style.css

@@ -1498,7 +1498,7 @@ object {
 }
 
 .wp-block-gallery {
-	margin: 0;
+	margin: 0 auto;
 }
 
 .wp-block-gallery .blocks-gallery-image figcaption,