Fixed margins of H2

build/index.asset.php

@@ -1 +1 @@
-<?php return array('dependencies' => array('wp-block-editor', 'wp-blocks', 'wp-components', 'wp-data', 'wp-editor', 'wp-element', 'wp-i18n', 'wp-primitives', 'wp-server-side-render'), 'version' => 'befba07e6fc7d1864274');
+<?php return array('dependencies' => array('wp-block-editor', 'wp-blocks', 'wp-components', 'wp-data', 'wp-editor', 'wp-element', 'wp-i18n', 'wp-primitives', 'wp-server-side-render'), 'version' => '4fa2c503062f786b6b8e');

plugin.php

@@ -618,7 +618,7 @@ function add_accordion_start($html, $attributes, $itemcount, $alignclass)
     if ($isAccordionEnabled) {
         enqueue_accordion_frontend();
         $titleText = esc_html(trim($attributes['title_text'])) ?: __('Table of Contents', 'simpletoc');
-        $accordionStart = '<h2><button type="button" aria-expanded="false" aria-controls="simpletoc-content-container" class="simpletoc-collapsible">' . $titleText . '</button></h2><div class="simpletoc-content">';
+        $accordionStart = '<h2 style="margin: 0;"><button type="button" aria-expanded="false" aria-controls="simpletoc-content-container" class="simpletoc-collapsible">' . $titleText . '</button></h2><div class="simpletoc-content">';
         $accordionEnd = '</div>';
     }
 

src/accordion.css

@@ -2,10 +2,6 @@
 	margin-bottom: 1em;
 }
 
-.wp-block-simpletoc-toc h2 {
-	margin: 0;
-}
-
 .simpletoc-collapsible {
 	background-color: #eee;
 	color: #444;