CSS-Only Loading Mask

Sometimes in a web application, we need to mark a bit of content as loading. Most solutions use some kind of JavaScript like jquery.loadmask, but »

The :matches CSS pseudo-class

:matches is a new pseudo-class defined in the CSS Selectors Level 4 specification. :matches allows you to group multiple selectors in one, reducing complexity. Example which »

Custom CSS Selectors

With cssnext it is possible to use a maybe future standard feature of CSS called "Custom CSS Selector". Using custom CSS selectors, repeated selectors can be »

Modifying CSS Colors with the color() function

For the past few days, I've been using cssnext to create stylesheets. One of my favorite features is the new color() function defined in the CSS »

JavaScript Classes - Basics

In ES6 (or ES2015 if you will), one great new addition is the new class syntax, known from almost every other classical object-oriented programming language like »