To use a W3.CSS template, you must include the W3.CSS stylesheet link in the of your HTML document.
These are the foundational "pieces" used inside these templates to build layout and style: Create a Responsive Website With the W3 CSS Framework W3.CSS Template
W3.CSS is a modern, responsive CSS framework that simplifies web development by using standard CSS without JavaScript dependency. It is smaller and faster than many other frameworks like Bootstrap. Basic Starter Piece To use a W3