Often you will need to adapt your design or code logic depending on resolution, where the user is, or what browser he is using.
{% highlight css %} /* Only apply margin to IE < 6 */ .ie-lt6 { margin: 10px; } /* Resize elements based on resolution */ .lt-800 .container { width: 600px; } .gt-1024 .container { width: 1000px; } /* Change style based on feature support */ .no-border-radius table { border: 1px dashed black; } /* Change elements on individual pages thank's to the CSS Router */ .index-page .ads { display: none; } /* Do something if the user is on a mobile device */ if (head.mobile) { head.load("iscroll.js"); } {% endhighlight %}All feature detections are both accessible via css classes, and javascript properties.