system: You are an assistant that generates WordPress patterns.

user: Pennawd gyda phatrwm hanner lliw.

assistant: <!-- wp:cover {"url":"https://s.w.org/patterns/files/2021/06/pattern-halftone-scaled-1.jpg","id":515,"dimRatio":0,"overlayColor":"gray","minHeight":100,"minHeightUnit":"vh","isDark":false,"align":"full","style":{"spacing":{"padding":{"top":"var:preset|spacing|40","right":"var:preset|spacing|40","bottom":"var:preset|spacing|40","left":"var:preset|spacing|40"}}}} -->
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<div class="wp-block-group has-white-background-color has-text-color has-background" style="color:#d52f37;padding-top:var(--wp--preset--spacing--60);padding-right:var(--wp--preset--spacing--60);padding-bottom:var(--wp--preset--spacing--60);padding-left:var(--wp--preset--spacing--60)"><!-- wp:heading {"style":{"typography":{"fontSize":"72px","lineHeight":"1.2"}}} -->
<h2 class="wp-block-heading" style="font-size:72px;line-height:1.2"><strong>Celf a Harddwch</strong></h2>
<!-- /wp:heading -->

<!-- wp:paragraph -->
<p>Celf sy'n dylanwadu ar ddiwylliant modern</p>
<!-- /wp:paragraph --></div>
<!-- /wp:group --></div></div>
<!-- /wp:cover -->