Create a box containing four child boxes. The four child boxes shall be pinned to the edges of the box.

See: https://codepen.io/nicokoenig/full/QdveKo

Create a progress bar that changes it's state hovering over it

See: https://codepen.io/nicokoenig/full/NdjmZW/

See: https://codepen.io/nicokoenig/full/YpYGLR/

See: https://codepen.io/nicokoenig/full/oYqmBd/

See: https://codepen.io/nicokoenig/full/GrjGpm/