Responsiveness
Remember to always include this meta tag in the <head> of every html document to assist in making your website mobile-friendly:
For a quick summary of responsive units:
- % is relative to the parent element's size
- VW, VH are relative to the viewport's (browser window or screen) size
- EM is relative to the current element or parent element's font-size
- REM is relative to the root element's (<html>) font-size