ID is a CSS selector that allows the styling of a single unique element. Their use in CSS is common and often a little controversial. In this video, I will outline some of the reasons why I prefer the `class` selector over `ID`, how CSS specificity works.

Hover is a pseudo class and can be used to style state. The hover state is active when a users mouse enters the bounding box of an element and is inactive when the users mouse leaves it. In this episode, we’ll look at the :hover pseudo class on text links and create a CSS dropdown menu triggered by hover and enhanced with jQuery for touch devices.

During their startup, Askins learned an important lesson: you must often remove yourself from your work in order to discover core issues. For example, his team desired to quickly solve their own developer problems and build systems to solve those issues.

Input masks can make for a great feedback device on your input fields. The input mask drop freatures formatting instructions for your users without creating the clutter that placeholders can sometimes cause.