with susy
a web design approach aimed at crafting sites to provide an optimal viewing experience—easy reading and navigation with a minimum of resizing, panning, and scrolling—across a wide range of devices
pros
https://developers.google.com/webmasters/smartphone-sites/
cons
<img src="desktop.jpg" srcset="mobile-s.jpg 320w, mobile-m.jpg 320w 2x, mobile-l.jpg 640w, mobile-xl.jpg 640w 2x">
support: http://caniuse.com/srcset
<picture>
<source src="mobile-s.jpg media="min-width:320px">
<source src="mobile-m.jpg media="max-width:640px">
<source src="mobile-l.jpg media="max-width:960px">
<img src="desktop.jpg>
</picture>
viewpoint
<meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=0">
media query
@media (min-width: 60em) {
}
fluid unit
.demo {
width: 80%;
}
Bootstrap ,foundation...etc
front-end framework for faster and easier web development
SUSY
an agnostic set of tools
for creating powerful, custom layouts
TRY IT ONLINE (sassmeister.com)
fin