Web pages are viewed in response to the size of the browser (computer, tablet, phone).
- http://getbootstrap.com/
- Examples: http://getbootstrap.com/docs/4.0/examples/
- Grid Demo also checkout Getting Started Example
- Layout mode in CSS3
- http://www.w3schools.com/css/css3_flexbox.asp
- https://developer.mozilla.org/en-US/docs/Web/CSS/CSS_Flexible_Box_Layout/Using_CSS_flexible_boxes
- https://css-tricks.com/snippets/css/a-guide-to-flexbox/ - excellent!
Bootstrap and Materialize are hosted on servers