I’m trying to get emulate this textbox container. But the thing is I am trying to adjust the height of the header, this part:

They provide all the files (html, css, js) of that page here
I’ve been searching through the documentation.css file for a while now to figure out where it is I can adjust the height of that box but I have been unsuccessful so far. This is what mine looks like:

As you can see mine looks almost exactly the same just the height of that box is too big. I’m fairly new to web programming so i might not be looking for the right thing in the right place so I’m hoping some more experienced eyes can figure it out.
Thanks for any help
The css is minified, what makes it a little more complex for beginers…
But if you search for
.main-content>headerin the filedocumentation.cssyou will notice it’s setting up a padding.The demo in the link you posted has:
In your code the first number is probably higher than 15, setting up a higher top/bottom padding. Just adjust it as you will.