Theme development

Hello!

I am making theme for Drupal 8 || 9, based on Classy templates.
I need to make some changes to the display of links in menu-local-task.html.twig file. But any changes to it don't work.

In theme.info.yml file base theme is: base theme: false
Classy templates inside my theme folder.

Im using exposed filter which working with ajax through default template as expected, but once using

Hi,

I have created a view that shows some webform submissions (a list of title, first name, last name). But when I want to use a filter (for ex showing only ladies) I'm getting issues. 
I'm in "Add filter criteria", I select the field I want to use to filter (for ex Name: Title). 

When I click the "Add and configure filter criteria" button, I see the spinning wheel for a couple of seconds and then nothing happens. I'm still on the "Add filter criteria" screen while I would expect to go to the configuration screen. 

How do I transfer files form a subdomain (drupal 9.1)to a domain in drupal 9.1

I created a subdomain that would a theme (dark news) that I would like to make my domain. 

Hello everyone,

I installed bootstrap4 theme and I created a subtheme using bootstrap4 appearance configuration menu.

When I activate bootstrap4 theme, I have a visible header and footer background color.
When I activate my bootstrap4 sub-theme, my header and footer background color is not visible.

However, when I compare style.css, style.css.map, style-4-5.css and style-4-5.css.map for both themes, they are identical.

Where does the difference come from ?

Hello!
I am making a theme for Drupal 8 || 9
I need to remove the link to the current page. Replace the tag <a> with the <span> tag, if the link has the "is-active" class

For drupal 7 I wrote this code: