Customizing Buttons - Height & Text Alignment

I am trying to format a set of buttons so that they are all the same size, despite varying amounts of text (one to three lines). I have adjusted the width and height, but I can't. figure out how to. vertically align the text. Right now it all seems to have the same top padding, so the 1 line and 3 line text is not centered. How can I fix this?

Hi,
Please share your website URL.

And please check this buttons. You can use them for free via this extension. Let me know if you have problem in that!

Best,
Leopold