Recently, I realized that standard CSS has evolved quite a lot.
When I talk with other engineers, it seems like many people do not know about it, so I will share it here.
For several years now, CSS has been able to write nesting syntax as a standard feature. This is a tremendous evolution.
In many projects, people introduced sass or scss to extend CSS, or used CSS frameworks that define styles through classes, such as Bootstrap.
Bootstrap had a big problem. That is that it ends up looking like a design prepared by Bootstrap.
