Google supports both Angular and React, which can be used as other open-source libraries. In contrast to this, however, is the popularity that comes with using a framework such as Facebook's Instagram or LinkedIn in their recent updates on how much work goes into building these apps compared with WordPress-based sites. Developers will often need more than just HTML+CSS skills when utilizing frameworks like these, so it may take longer to establish themselves professionally within your industry if starting cold without any experience whatsoever.