The demo styled a Moon Jelly card. This new Sea Star card uses the same three selector types, but its class and ID have different names. Look at index.html before writing the rules.
A readable specimen card with an element rule, class rule, and ID rule.
line-height: 1.6; in a p rule.background-color: #fff4cc; in a .care-tip rule.color: #7a1fa2; in a #sea-star-title rule.Run the page. The two-line paragraph gains breathing room between lines; only the care tip gets a background, and only the title changes color.
You can now choose whether a style applies to a tag, a reusable class, or one unique ID.
A class selector starts with a dot; an ID selector starts with #.