There are 26 modules to explore, all created by Google trainers, packed full of practical exercises and real-world examples to help you turn knowledge into action.
1. When you work with transparent images you can use the `drop-shadow()` filter function to create a shadow on the image's content, instead of `box-shadow` property which creates a rectangular shadow behind an element's entire box:
filter: drop-shadow(2px 4px 8px #585858);
2. Center anything
Easily center anything, horizontally and vertically, with 3 lines of CSS: