Drupal 8.x

What is the theme for this Drupal Forum?

Hey, everybody, I'm new in Drupal. I'm working with version 8 and I've created a form, which when it sends, datas are sent to RESTAPI with remote url handler, and afterword it shows a modal with thank you message. I'm trying to show in the modal window the data that has been sent it in the form but I can't find a way to do it. Can you give me some guidance? Thank you 

I want to write a custom module that:

Gets the node title that is printed out by a custom view and then passes it inside a json object to a template which prints out the title.

e.g: http://my-drupal-site/my-custom-view/12 prints out the title of the node with node id 12, e.g. "Delish Fish Dish"

I'm the volunteer maintainer of the website of the Dutch origami community. Another person helps in putting content on the website. I built the current site in Drupal 7 and I am now in the process of migrating it to Drupal 8. I want to improve the way images are added and used on the current site and make it easier for other volunteers to step in and help maintain the content. 

I'm running into roadblocks getting things to work on the Drupal 8 site. I hope someone can give me some pointers on how to fix the problems.

The website has several types of images:

The Government of Yukon's eServices for Citizens unit leads the government's digital transformation in public service delivery. We build, maintain and support digital platforms, standards, design systems and more. We partner with departments to deliver faster, simpler and better digital services for citizens.

I am currently porting the amazon_pa module to drupal 8: https://www.drupal.org/project/amazon_pa

The widget has a custom setting called locale. Meaning it is a select box here: /admin/structure/types/manage/article/fields/node.article.field_amz/storage

I am not able to save the vale i input there. So what one has to do that the form element $element['locale'] is actually saved and can be retrived late?

Thank you very much.