fix blog post editor having wide width

block-styles.css

@@ -70,4 +70,10 @@
 */
 ul.is-style-arrow-list {
   list-style-image: url('https://beta.autonomic.zone/wp-content/uploads/2023/01/arrow.png');
+}
+
+/* HACK: fixing stretched out post width in editor */
+.editor-styles-wrapper .block-editor-block-list__layout.is-root-container > :where(:not(.alignleft):not(.alignright):not(.alignfull)),
+.editor-styles-wrapper .editor-editor-canvas__post-title-wrapper > :where(:not(.alignleft):not(.alignright):not(.alignfull)) {
+    max-width: 800px;
 }