Overview Tables are present in a lot of apps (web, desktop or mobile program) and they are a main component in showing information to the end user.
Among a lot of products in the free website builder review...
Design trends may last couple of years, but web designing trends change quickly. This is one industry where trends come and go frequently.
Bootstrap 4 is coming as well as the Bootstrap 3 is still the most used variant of the Twitter Bootstrap and also the biggest front end, mobile-ready, user-friendly framework.