Theme development

I have a site with Drupal 8 and I have created contextual views to display the tasks to do for the user. It works, but I need a counter in my menu.

Each type of task have a class :

• For red tasks, there is the class .task-danger

• For orange tasks, there is the class .task-warning

• For green tasks, there is the class .task-success

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Tell me how to thematize this element on the page when a regular user edits a record?

I want to hide the given text in "tooltip" bootstrap 4 (bario).

Manuals from bootstrap 3 do not work

Google did not help
So it looks now:

need to do so:

I am new to Drupal and am editing a site for a new client. The client would like a footer added and from what I've read in my research I should do this through the Structure > Blocks function. Problem is, I am not showing the Blocks function as an option here. It was built in Drupal 7 so this may be the issue? The only options I'm given under the Structure tab are:

-Content Types

-Features

-Menus

-Panels

-Mini Panels 

-Taxonomy

-Views

-Contact Form

I have an autoplaying looping video on my site's home page.

this is the twig code used to render it: