If I can avoid using JavaScript for element animations, I'm incredibly happy and driven to do so. They're more efficient, don't require a JavaScript framework to manage steps, and they're more elegant. One effect that is difficult to nail down with pure CSS is sliding up and down, where the content is hidden when "up" and slides in when "down". The reason it's difficult is because you may not k
![Pure CSS Slide Up and Slide Down](https://cdn-ak-scissors.b.st-hatena.com/image/square/9993c9cdb0a517bc9f01c87e168851edb677bade/height=288;version=1;width=512/https%3A%2F%2Fdavidwalsh.name%2Fwp-content%2Fthemes%2Fpunky%2Fimages%2Flogo.png)