Chapter 14. Transitions

This chapter covers

  • Bringing motion to the page with transitions
  • Understanding timing functions and choosing the right one
  • Coordinating with JavaScript

In traditional print media, things are static. Text cannot move around on paper; colors cannot shift. But the web is a living medium, where we can do so much more. Elements can fade out. Menus can slide in. Colors can shift from one value to another, and the easiest way to do any of these is with transitions.

With a CSS transition, you can tell the browser to “ease” one value into another when the value changes. For example, if you’ve blue links with a red hover state, a transition will cause the link to blend from blue through purple to red when the user mouses over—and ...

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