How to style blocks in bootstrap?

Question

Layout

Good day, can you help me figure out how to achieve such a display of blocks during layout? They are in the form of a tick (there are several of them on the site). Thank you.

Answer 1

So?
And it's possible like this:

Answer 2

On the click event on the plus variable ++, on the minus vice versa.

Answer 3

bennettfeely.com/clippy you roughly need an inverted triangle