Rainfall: Add alignment styles

rainfall/style.css

@@ -26,4 +26,65 @@ Tags: one-column, custom-colors, custom-menu, custom-logo, editor-style, feature
 	background-color: var(--wp--preset--color--black);
 	color: var(--wp--preset--color--black);
 	border: 1px solid var(--wp--preset--color--white);
-}
+}
+
+/*
+ * Font smoothing
+ */
+
+ body {
+	-moz-osx-font-smoothing: grayscale;
+	-webkit-font-smoothing: antialiased;
+}
+
+/*
+ * 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--style--block-gap);
+	padding-right: var(--wp--style--block-gap);
+}
+
+.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--style--block-gap)) !important;
+	margin-right: calc(-1 * var(--wp--style--block-gap)) !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;
+}