Favorite or most simple way to level up as a front-end developer is to do the work. Here’s some resources that encourage you to level up by building things for the sake of leveling up
Pixeltrue is a new collection of free SVG illustrations and Lottie animations for commercial and personal use.
Gradient Magic is a free gallery of fun and interesting CSS gradients.
3 delightful buttons, all made better with GSAP Plugins.