Basic CSS
floats: are used to move things from left to right on the page.
id : this is a selector, the id selector is used to identify a unique element
class : this is also a selector, this is used to specify a style for multiple elements or groups of elements
margin : the margin clears the area of an element outside the border. all four (top, bottom, left, right) can be moved and resized independently. A shorthand margin can be used to move all four at the same time.
border : specifies what kind of border will be displayed
