Fix some issues with fullwidth blocks on styled layout (#676)

* Fix lastest posts in fullwidth group

* Avoid extra padding on nested WP group blocks

Author: albig

sass/wp-blocks/group.scss

@@ -4,8 +4,6 @@
 
     &.alignfull {
         width: 100vw;
-        display: flex;
-        justify-content: center;
 
         margin-left: calc(50% - 50vw);
         margin-right: calc(50% - 50vw);

sass/wp-blocks/styled-layout.scss

@@ -4,6 +4,11 @@
         padding-top: 100px;
         padding-bottom: 100px;
 
+        .wp-block-group {
+            padding-top: 0;
+            padding-bottom: 0;
+        }
+
         @include media-breakpoint-down(md) {
             padding-top: 50px;
             padding-bottom: 50px;