title: How to customize post block in Wordpress?
body: <p>i want to <strong>edit</strong> a block in wordpress theme.</p>
  <p>I want to make a custom wp:image block and transform it from this:</p>
  <p><a href="https://i.stack.imgur.com/r2q9N.jpg" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/r2q9N.jpg" alt="Step 1" /></a></p>
  <p>To something like this:</p>
  <p><a href="https://i.stack.imgur.com/ykr3l.jpg" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/ykr3l.jpg" alt="enter image description here" /></a></p>
  <p>I searched for guides on this topic, but what I needed was not there.</p>
  <p>Any ideas?</p>