Drupal 8.x

I installed the Message module on my site. I want to set up ads for certain roles. I want to create messages and select the roles that can see the message.

How to limit messages to a role? I don't want to limit the type of message, I want to limit only the message.

Hello, 

https://www.drupal.org/project/field_timer

"

1. Download the module.
2. To be able to use County and jQuery Countdown plugins download them to libraries/county and libraries/jquery.countdown. This module supports jQuery Countdown 2.1.0.
3. Enable the module using admin module page or drush."

I followed the steps for D8. Downloaded the libraries as well. Enabled the module (extends > module > enable) Did not use drush. 

I have a button on my site, when I click on it, the background should be darkened.

https://ibb.co/NWCpxpj

It works on all pages of the site :

https://dev.s1biose.com/fr/produit

But it doesn't work on the homepage :

https://dev.s1biose.com/fr

How to make it work on all pages ? Here are my files :

style.css :

Hi,

I'm very new to custom modules and was wondering if it's possible to create a module that basically runs a quick script.

Basically - I want to check if the URL the user is on contains certain things and if so, check for a token (or cookie or something), and if that exists grant access to the page. But if the token doesn't exist send them to a login page where they simply enter a password, and if the password is correct, add the token and grant them access.

Hello,

I have a content type X.

I have title and body fields.

I like to add one more field "Countdown" which should allow me to enter number of days or hours.

When I go to the nodes, I should see the count down by days, hours, mins, secs. 

I installed this module https://www.drupal.org/project/jquery_countdown_timer

"

1. Unzip the files to the "sites/all/modules" directory and enable the module.

i have theme which works with jquery 2 and i see that core jquery of drupal is 3. is there a way keep jquery 3 for only admin and 2 for front pages.

Thank you very much

Kash