Include core block style to a custom block

I creat a custom block (cover-single) to create a cover with featured image and title of single post type.
but i want to use the style of wp-block-cover-css. my block has same class.
the css load only if i include the block cover on my template :

<!-- wp:cover  --><!-- /wp:cover -->
		<!-- wp:site/cover-single {"align":"full"} /-->

i try to enqueu style with the handle,… but nothing