Reboot

For browser resetting we have used a variation of the famous normalise.css called Reboot, which was created by bootstrap (https://getbootstrap.com/docs/4.1/content/reboot/):

Appproach

Reboot builds upon Normalize, providing many HTML elements with somewhat opinionated styles using only element selectors. Additional styling is done only with classes. For example, we reboot some <table> styles for a simpler baseline and later provide .table, .table-bordered, and more.

Here are our guidelines and reasons for choosing what to override in Reboot:

• Update some browser default values to use rems instead of ems for scalable component spacing.
• Avoid margin-top. Vertical margins can collapse, yielding unexpected results. More importantly though, a single direction of margin is a simpler mental model.
• For easier scaling across device sizes, block elements should use rems for margins.
• Keep declarations of font-related properties to a minimum, using inherit whenever possible.