From Conservapedia - Reading time: 1 min
Cascading Style Sheets (CSS) are used with HTML to give a web page designers centralized control over the appearance of each page. CSS rules work best when stored in a stylesheet document, but style rules can also be embedded into a web page (in the header) or used inline (in a tag).
All definitions in CSS are written as
selector {
property: value;
}
For example, in order to change the background to red, and the text color to maroon, you would type,
body {
background:red;
color:maroon
} Body is the selector - meaning you want to edit a characteristic of the body in html, background and color are the properties - background refers to the background color and color refers to the text color, and then red and maroon are the given values for those properties.