We stopped in confusion and said we'd learn it later because there was so much else to do now. In fact, we're going to explain it to you in very short order and you too will understand it. Even if you don't fully understand it, you'll have enough working knowledge that you can use it to your advantage. CSS is very finicky about syntax. One misspelling, one misplaced semi-colon and the whole thing can go kaput and not reflect your chosen attributes.
Different browsers react just a bit differently with CSS styles.
We're going to show you the syntax that works best across different browsers. If you follow our syntax guidelines you'll find it easier to design CSS to work across different platforms. That's a good question. Fonts, spacing, and line height are all part of style and with CSS you can apply different attributes to every tag you use in your pages. We specified the font size, the font family and the text indent.