CSS

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  • if a div tag has an id="foo", then in css you reference the style of the tag by using #foo
  • CSS id vs. class
  • horizontal rule styling
  • position: {absolute, relative};
    • static Default. An element with position: static always has the position the normal flow of the page gives it (a static element ignores any top, bottom, left, or right declarations)
    • relative An element with position: relative moves an element relative to its normal position, so "left:20" adds 20 pixels to the element's LEFT position
    • absolute An element with position: absolute is positioned at the specified coordinates relative to its containing block. The element's position is specified with the "left", "top", "right", and "bottom" properties
    • fixed An element with position: fixed is positioned at the specified coordinates relative to the browser window. The element's position is specified with the "left", "top", "right", and "bottom" properties. The element remains at that position regardless of scrolling. Works in IE7 (strict mode)
  • margin: 0 auto;
  • background property