How can I get the position of a Button on a website

I'm looking for a solution to find the position of a specific button on a website.

What I want to do is to get the position, write them into a text file and use those coordinates to run another program to click on this specific position.

If you guys have a better idea to realize this please let me know

I'm also wondering if it is possible to use a neural network to train it to find the position and then execute a click on this button.

The problem with automation is, that sometimes ad appears on this site and so the position of this button changes