Merge branch 'feature/gut-block-columns'

Author: Cocola

src/scss/abstract/_breakpoints.scss

@@ -8,7 +8,7 @@
  */
 
  $breakpoints : (
-    xsm: 480,
+    xsm: 600,
     sm: 768,
     md: 1024,
     lg: 1440

src/scss/wp/_gutenberg.scss

@@ -11,6 +11,17 @@
 .wp-block {
     $el : &;
 
+    // Block columns
+    &-column {
+        @include breakpoints(xsm) {
+            flex-basis: calc(50% - #{$base-spacing});
+        }
+        &:nth-child(even){
+            @include breakpoints(xsm) {
+                margin-left: $base-spacing*2;
+            }
+        }
+    }
     // Block Button
     &-button {
         margin-bottom: $base-spacing;