Headline Question

I have copied and paste this headline from GPB:
<!-- wp:generateblocks/headline {"uniqueId":"b8c33dad","borderColor":"#0693e3","highlightTextColor":"#0693e3","paddingLeft":"20","borderSizeLeft":"6","htmlAttributes":[],"transforms":[]} -->
<h2 class="gb-headline gb-headline-b8c33dad gb-headline-text">Add borders on any side of your headline</h2>
<!-- /wp:generateblocks/headline -->

How can I achieve this, whitout copy the code all the time? It must be doable in the editor, right? I thought this is a Icon, but I cannot see this in the icon list. Must be a border then, but i can only set the border color and not the border?