Usability testing makes the difference between design thinking (designing for the user) and the outdated modes of thinking.

Here is what they drew.

Pseudo-elements are in use for a long time. However, there are some uses cases that I feel they are not entirely known across developers.

Urban exploration of abstract shapes of tetris in Sofia, Bulgaria.

A deck of 52 cards you can download and print to learn how cognitive biases might influence user behaviour, but also meetings and team collaboration