Most browsers add some styling of their own
to your web pages. Check out this code:
You can see that the heading has a larger
font size and font weight compared to
the other text. We haven't added this
styling. This basic styling comes from
the browser. The browser has some default styling
to ensure that even if developers don't
remember to add these styles, your designs
still look alright. Here is a link to what
styles Chrome adds to every page that it
displays.