position: fixed; header and a .wrapper class for this example. I wanted to center the header on the page with the inset property (top, bottom, left, right works too). However when i use inset: 1em auto 0 auto; which i assume to have the top, bottom, left and right order, it doesn't work, instead i have to do inset: 1em 0 auto 0 which doesn't make sense to me. the 1em is to space it from the top of the page but since i don't want any space at the bottom i would put 0 instead of auto but that stretches it for some reason which also confuses me..wrapper class is directly applied to the header. If it's wrapped in it my flex on header doesn't work and the content seems to get really long if you hover over it in dev tools.