General discussion

I have Drupal with Bootstrap 4 theme. I want to hide the modal when I click on a link or on a form-submit in the modal. How to hide the modal automatically ?

In the Drupal Commerce purchase funnel, there are images for each step of the order.

I would like to replace the images with SVGs.

Here is the CSS :

I am with Drupal 8 and Bootstrap 4

I created a modal menu. I want that when I click on an item with the class form-submit the modal menu will automatically close.

Here is the HTML code :

If anyone has a sample website style guide they'd be willing to post or send me that would be appreciated.  scott.render@louisvilleky.gov  We are working to create one as an addition to a branding guide we've been using.  Thanks.

Scott

I am using drupal 8.9.10
I have a content type with several text field, and a file field too.

My problem is: 
- I have to call an external web service. 
- This web service receives a file and returns it with a verification code.
- I have to add this file to the file field
 and finally save all the content

I am a beginner in drupal, I have been looking at tutorial to create custom modules and I don't know how to develope this. 

I don't know if it is necessary to create a module or create a custom field