Here is a quick css trick for helping to see where your elements are placed in a website.

Use outline instead of border to place lines around your elements. Outline does not take up space or effect pixel layouts because it does not effect the dimensions of an element where as using border does.
html {
box-sizing: border-box;
outline: black solid 2px;
}
*, *:before, *:after {
box-sizing: inherit;
outline: inherit;
}
Use this with box-sizing: border-box; to make sizing and placing elements a bit easier!
I’ve linked a w3 schools page if you want more info and this tip was given to me by a fellow streamer andee927, I’ve also linked his twitch channel if you want to check him out.
W3Schools Article: https://www.w3schools.com/css/css_outline.asp
Andee927 Twitch: https://www.twitch.tv/andee927
Feel free to comment any tips you guys like using. Hope that helps and hope you guys are staying safe and sane out there. I’ll catch you guys next time!