How to make a button that trigger something in html and have cooler design

Question

What I mean Is that how to make a button trigger something, what I mean is that like in html there are code named button, the button does nothing, how to make it triggers something and different shaped, ex:"if I press this button a text appear *press* (text appear)"how to make that happen? I want to make a working button in html to make it cool, so please do that

Answer 1

Html can't do that by itself (nor css), you'll need some JavaScript (or PHP)

Answer 2

Keep continuing with your courses and you'll learn how to do it.
Specifically, in the JavaScript course they teach how to use buttons to trigger changes in the HTML.