Why is the div tag not being added?

Question

css

I found a slider on the Internet , I need to wrap the slider itself in a header tag with CSS properties: width:100vw; height:100vh; And after the slider, make a div with arbitrary text. Wrap slider, I wrapped. But adding a new div does not work, I don’t understand what the problem is.

Answer 1

What is the problem? Add after div with slider
<div>произвольный текст</div>

Answer 2

Well, edrit, read the basics of html, it's too early for you to rivet sliders without this knowledge.