How to display custom block anywhere in a div? I am creating one drupal 8 theme based on bootstrap framework, for banners I created one custom block, named as 'Homepage banner', without creating any region, how to display this on my homepage template 'page--front.html.twig'.
Install the twig tweak module
Insert the following code in your page--front.html.twig 

{{ drupal_entity('block_content', 1) }}



Where "1" is the block id. You can see the block ID when you edit the custom block, it's in the URL - E.g. my-drupal-site.com/block/1