title: Can I unload Gutenberg Block CSS even if using Block Editor?
body: <p>I check <a href="https://stackoverflow.com/questions/52277629/remove-gutenberg-css">this</a> and <a href="https://wordpress.org/support/topic/remove-gutenberg-css/" rel="nofollow noreferrer">this</a>. All said that if one use classic editor, then he can unload the Gutenberg Block CSS safely.</p>
  <p>However, currently I am using Block editor, can I still unload the Block CSS? I search a lot of articles but cannot find any, so I make a test by myself.</p>
  <p>I load a page <a href="https://www.datanumen.com/blogs/12-solutions-when-your-outlook-is-slow/" rel="nofollow noreferrer">https://www.datanumen.com/blogs/12-solutions-when-your-outlook-is-slow/</a> and use Chrome DevTools to check the coverage of the block CSS, the result is below:</p>
  <p><a href="https://i.stack.imgur.com/NfO8W.jpg" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/NfO8W.jpg" alt="enter image description here" /></a></p>
  <p>So actually 99.3% codes in block CSS is not used at all. And I check the 0.7% codes and they are seems to be useless. So I use Asset Cleanup Pro to unload the block CSS site wide. And then retest the same page again. And it seems the page is loaded without any outstanding changes. At least, I cannot notice any changes.</p>
  <p>So, does that mean I can also upload the block CSS for posts that are edited with the block editor?</p>
  <p>I am using the latest version of WordPress(<strong>5.8</strong>).</p>