TOPIC 1: New HTML I’ve learned from this chapter

We’ve already been over the headings, paragraphs, bold & italic tags. New information I’ve learned from this chapter is <sup> (superscript) and <sub> (subscript). Sup elements are used to raise a number, such as E=MC²and sub elements are used with footnotes like h₂O. Although I already know break tags, <hr/>tags add breaks between themes, separating them from each other with a line. Like so:

TOPIC 2: Understanding color - CSS

As we’ve learned in many years of design school, RGB values are made up of red, green and blue values and hex codes are identified by # and a number. CSS3 introduces a new way to specify colors known as HSL, specifying hue, saturation, and lightness. It is specified in CSS code as hsla.

TOPIC 3: Controlling Opacity in CSS

The CSS3 properties also allow for adding a forth value to indicate opacity. The rgba value will only affect the element on which it is applied (not child elements). Opacity is relatively easy to define, simply add “opacity” under the rgb code in CSS.