An approach (method) to developing a website that changes the usual sequence of the process from the full (computer, desktop) version of the site to the mobile version to the reverse – first, the mobile version of UI/UX design is worked out.
Mobile First Core Principles:
- Show main content as early as possible;
- Small size (long) of the web site pages, as the mobile network connection speed may be weak;
- Exclude extra resources before they are needed.
To date, Google has solved the issue by introducing AMP technology.