How to display the post thumbnail in the background image of the block?

Question

css

I try like this

<div class="contacts__image" style="background-image: url(<?php echo get_the_post_thumbnail_url( 'img/bg.jpg') ?>);"></div>

Answer 1

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

Answer 2

You are outputting a whole img tag in styles. To get the image url, you need to use: get_the_post_thumbnail_url()
More details here: https://wp-kama.ru/function/get_the_post_thumbnail_url