Block Canvas: replace alignment CSS (#6438)

Co-authored-by: Jason Crist <jcrist@pbking.com>

block-canvas/style.css

@@ -49,58 +49,6 @@ GNU General Public License for more details.
 	background-color: var(--wp--preset--color--secondary);
 }
 
-/*
- * Alignment styles, borrowed from Twenty Twenty-Two.
- * These rules are temporary, and should not be relied on or
- * modified too heavily by themes or plugins that build on
- * Twenty Twenty-Two. These are meant to be a precursor to
- * a global solution provided by the Block Editor.
- *
- * Relevant issues:
- * https://github.com/WordPress/gutenberg/issues/35607
- * https://github.com/WordPress/gutenberg/issues/35884
- */
-
-.wp-site-blocks,
-body > .is-root-container,
-.edit-post-visual-editor__post-title-wrapper,
-.wp-block-group.alignfull,
-.wp-block-group.has-background,
-.wp-block-columns.alignfull.has-background,
-.wp-block-cover.alignfull,
-.is-root-container .wp-block[data-align='full'] > .wp-block-group,
-.is-root-container .wp-block[data-align='full'] > .wp-block-columns.has-background,
-.is-root-container .wp-block[data-align='full'] > .wp-block-cover {
-	padding-left: var(--wp--custom--gap--horizontal);
-	padding-right: var(--wp--custom--gap--horizontal);
-}
-
-.wp-site-blocks .alignfull,
-.wp-site-blocks > .wp-block-group.has-background,
-.wp-site-blocks > .wp-block-cover,
-.wp-site-blocks > .wp-block-template-part > .wp-block-group.has-background,
-.wp-site-blocks > .wp-block-template-part > .wp-block-cover,
-body > .is-root-container > .wp-block-cover,
-body > .is-root-container > .wp-block-template-part > .wp-block-group.has-background,
-body > .is-root-container > .wp-block-template-part > .wp-block-cover,
-.is-root-container .wp-block[data-align='full'] {
-	margin-left: calc(-1 * var(--wp--custom--gap--horizontal)) !important;
-	margin-right: calc(-1 * var(--wp--custom--gap--horizontal)) !important;
-	max-width: unset;
-	width: unset;
-}
-
-/* Blocks inside columns don't have negative margins. */
-.wp-site-blocks .wp-block-columns .wp-block-column .alignfull,
-.is-root-container .wp-block-columns .wp-block-column .wp-block[data-align="full"],
-/* We also want to avoid stacking negative margins. */
-.wp-site-blocks .alignfull:not(.wp-block-group) .alignfull,
-.is-root-container .wp-block[data-align="full"] > *:not(.wp-block-group) .wp-block[data-align="full"] {
-	margin-left: auto !important;
-	margin-right: auto !important;
-	width: inherit;
-}
-
 /*
  * Responsive menu container padding.
  * This ensures the responsive container inherits the same

block-canvas/theme.json

@@ -28,6 +28,7 @@
     ],
     "settings": {
         "appearanceTools": true,
+        "useRootPaddingAwareAlignments": true,
         "color": {
             "palette": [
                 {
@@ -343,7 +344,11 @@
             }
         },
         "spacing": {
-            "blockGap": "30px"
+            "blockGap": "1.5rem",
+            "padding": {
+                "right": "var(--wp--preset--spacing--60)",
+                "left": "var(--wp--preset--spacing--60)"
+            }
         },
         "typography": {
             "fontFamily": "var(--wp--preset--font-family--system-font)",