Set Wordpress Thumbnail as background

Question

I need to put the Wordpress thumbnail as background in a div

Currently has img even, using Loop::thumbnail()

Answer 1

You can insert the url of the thumbail into a style inside the div, this way every time you change the thumbnail it will be changed in the background of the div too:

<div style="background-image: url("<?php echo get_the_post_thumbnail_url(get_the_ID()) ?>");">
</div>

Remember to pass the post id as a function parameter get_the_post_thumbnail_url().