An AMA where I do my best to answer questions you might have about front-end development, myself, or the projects I help run.
I love this post by Simon Holdorf. He's got some ideas for you to level up your skills as a front-end...
CSS custom properties have a ton of use cases. They have all the power of traditional variables, only they follow the cascade like we expect in CSS. Plus you can get clever with their values and combine them with other CSS technology to do very interesting things.
I picked out a couple of posts that demonstrate CSS layout possibilities in interesting ways.