Drupal 8.x

How can I hide a block after the user clicked to collapse it? In fact the block should be only once visible at the beginning and hidden after clicking on the title.

Can someone help me?
Thanks

I was thinking about converting from a Joomla 3.9 component to a Drupal 8 module. Maybe a custom template too. Of course Joomla does not have 'content types' but uses database tables directly.

So, a question that popped up is: when should I use 'content types' and when should one use the database within Drupal 8 more directly? Is it considered 'working against Drupal' if one uses database tables instead of content types?

What advantages and disadvantages are there to both methods?

I wrote a new back-end to process my queues (to delay items upon retrying). It works when I manually trigger the queue processing, but when the cron runs the corresponding QueueWorker it does not use my back-end but the default one.

I know how to manage and set up a Drupal site, but I'm still a beginner. I'm less sure how to make a template of my own. I have a specific homepage design that I haven't seen in template yet. I'd like to talk to someone about what my best/quickest option is - for example, can I use a theme and just hard code my homepage? The homepage design is fairly simple, think a grid that resembles a monopoly board with specific blocks showing different content types and a large space in the center.

Thank you for any help someone can give me. 

MacKenzie

Busy for some time to migrate from drupal 7 to 8 running in this problem on my dev environment not in production yet with version 8

Al the urls from the 8 version (8.8.3) have index.php in the url f.i. 
http://localhost:7777/TRCDR881_1/index.php/content/contact
This seems to work for all links to content on the site, so no problem yet but: