Global style for images

Is it possible to add global styling to the images? I use a lot and it would be quicker.

Interesting! Could you possibly tell me what you would like to apply globally like style to your images?

Thanks!

Mainly the borders, and, may be “margin” and “padding”. See the two examples below, the first on a page, the second on a post

For the pages, I created a global style, but, inside the post, it should be a necessity