A Sass/Stylus mixin enabling swift, maintainable and performant implementation of responsive design mockups.

1. Copy the source code of the Sass or the Stylus implementation
2. Paste it in a file in your repo
3. Import the scaleLinearlyBase() mixin in a stylesheet where you want to use it.
4. Preferably wrap it with a new mixin called scale() initialised with your defaults, as shown in the example below
5. That's it, you're ready to scale!

In a global, or shared (one per UI module) file, import scaleLinearlyBase() and wrap it with the defaults of the mockups you're given by your designer. Here I assume I was given a small mockup of 320px width and a large mockup of 1440px width.

I usually try to keep most of my global or shared "magic" CSS values organised in separate files like lengths.scss and colors.scss, but for simplicity's sake I'll just inlined them in this example.

/* homepage.scss */

@import 'path/to/global/mixins/scaleLinearlyBase.scss';

$lengths-mockup-viewport-min: 320px;
$lengths-mockup-viewport-max: 1440px;

@mixin scale(
  $property,
  $lengthAtViewportSm,
  $lengthAtViewportLg,
  $capMaximum: true,
  $useImportant: false
) {
  @include scaleLinearlyBase(
    $property,
    $lengthAtViewportSm,
    $lengthAtViewportLg,
    $capMaximum,
    $useImportant,
    $lengths-mockup-viewport-min,
    $lengths-mockup-viewport-max,
  );
}

Then in your Sass stylesheet:

/* hero.scss */

@import '../homepage.scss';

h1 {
  @include scale(font-size, 26px, 48px);
}

Or with Stylus:

/* hero.styl */

@import '../homepage.styl';

h1 {
  scale(font-size, 26px, 48px);
}

I've setup a minimal live demo app implemented with the help of scaleLinearly().
Resize your browser window and watch the design flow in response.

You can also check-out the source code of the demo app.

Check the the announcement article on Medium for all the juicy details.

There's no NPM module to import at this time, since I prefer to keep it a simple copypasta file.

If enough people think it would be useful, sure, I'd be happy to! Just open an issue.

Distributed under the MIT license. See LICENSE.md for more information.

1. Fork it (https://github.com/maninak/scaleLinearly/fork)
2. Create your feature branch (git checkout -b feature/fooBar)
3. Commit your changes (git commit -am 'Add some fooBar')
4. Push to the branch (git push origin feature/fooBar)
5. Create a new Pull Request