What is Universal Selector? "The universal selector matches any element type. It can be implied if it isn’t the only component of the simple selector." They say that the universal is known by an * which you can use on a type element, except it matches any and every element it can. So how they explain it is that * {color: red;} would turn every element in an entire document red. What is CSS reset? "SS Reset or Reset CSS is the process of resetting or setting the styles of all elements to a baseline value so that you avoid cross-browser differences due to their built-in default style settings." So I think what they mean is that resetting your styles, you avoid defaulting to the browser’s built-in styles, which differs from browser to browser. Like if you used a tag, and in fire fox it would be displayed it in black/bold type. If in the future a new web browser came out and by default all tags are in pink/italic. With the CSS reset you can guarantee that you always the black/bold. As far as why I would use one over the other one... I cant really get into that yet as I have never used either. I believe that they both have their advantages. I know that the CSS does take out the default margins and padding that is cool. But if you declare a CSS reset in the top of you CSS page and then down further in your your doc. you have different padding the css reset will be overruled.