Control directives and how to use them
'Control directives' sounds a bit scientific—"Hank, initiate the control directives and fire up the hydro drives". However, it's actually a lot more straightforward than that. Control directives simply mean that Sass has functionality baked-in to control when styles get generated.
Remember in Chapter 6, Advanced Media Queries with Sass and Mixins, we looked at our MQ mixin and noted it was essentially a series of if statements (if this is true do this, otherwise do something else). That is an example of a control directive in Sass; it is controlling what is generated based on certain conditions. See? Easy.
Sass has a few of these control directives so let's look at some examples. Perhaps more importantly, how ...
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