Here is a quick tip for users who like the idea of using SASS-powered stylesheets, but may not want to bother setting up a development framework to do so.
A Really Quick Intro to SASS
If you’re not familiar, SASS (“semantically awesome stylesheets”) builds off your existing CSS knowledge, but tosses some dynamic spice into the mix. The result leaves you with increased power and flexibility as a coder/designer. An example of SASS in action looks as follows (compared to the equivalent CSS):
Note: refer to the post comments (below) for community feedback regarding recent updates to SASS syntax – some of the above code may be deprecated.
The result is code that is easier to read, takes up less space, and supports the very helpful nesting of styling rules. Another tremendously useful feature is the ability to use variables throughout all of your stylesheets — something that becomes invaluable when working on larger websites or applications. SASS also supports mixins, operations, and beyond — learn more at the SASS website, or by reading Michael Bleigh’s excellent SASS intro.
SASS with static websites, you say?
Until somewhat recently, I’d only used SASS when jumping in to help with design work on pre-existing, larger Rails applications. This works great, as the markup is already in place and changes are easy to make. My SASS experience in this regard has been a good one.
When coding a new, larger site from scratch, however, I’ve never found a satisfying approach to use SASS from square one. I’ve dabbled with a few different SASS-compatible static website frameworks (Middleman, StaticMatic, etc) — but never felt comfortable enough with these to full integrate them into the beginning of my HTML/CSS coding process. As such, my preference has remained: build the layout in static HTML, and when fully coded & styled, integrate into the Rails app. Sadly, SASS fell by the wayside too often with this approach.
But finally, thanks to the latest beta versions of the HAML/SASS gem, an accessible solution lies in wait. This setup will auto-compile your SASS into CSS whenever changes are made. Best of all, no additional framework setup or files are needed… just what I’ve been looking for. Make it happen as follows:
1. Install the latest HAML/SASS gem
When I discovered this technique, the latest gem was installed as follows:
gem install haml-edge
However, in the meantime there have been beta releases of SASS 3.0, which should achieve the same ends. install this gem as follows:
gem install haml --pre
If you’re curious if anything more recent has been released, check out the HAML/SASS blog.
2. Setup your local project directory
3. Summon the sass
Finally, from the command line, run this line to make the magic happen:
sass --watch path_to_sass:path_to_css
The path before the colon is wherever your SASS files are located… the path after the colon is where you want the CSS to be generated. Of course, your HTML should reference the location of the CSS files. Keep in mind: when styling this way, any changes you make to a CSS file will be lost if/when the SASS file is changed (the overwrite is automatic).
Also note that you will need to run this step each time you want to enable auto-compiling SASS. It will run in the background, and instantly take action if a SASS file has been changed:
And that’s it. Whenever you make changes to any SASS files in the directory you specified, the corresponding CSS files will be automatically updated (and created, if necessary). This lets you benefit from the dynamic nature of SASS without requiring any framework setup.