title: How to merge .CSS files with Sass (or other tool)?
body: <p>I can use <a href="http://sass-lang.com" rel="noreferrer">Sass</a> to compile multiple .SCSS or .SASS input files into a single .CSS output file using <code>@import</code> as described <a href="http://sass-lang.com/docs/yardoc/file.SASS_REFERENCE.html#import" rel="noreferrer">here</a>.</p>
  
  <p>If I use <code>@import</code> to include normal .CSS files, they are not merged.  The output .CSS file still contains the <code>@import</code> directives.  That makes sense.</p>
  
  <p>But is there a way I can override this behavior, perhaps a command-line switch to the Sass compiler?  In other words, can I tell Sass to attempt to forcibly merge <code>@import "foo.css";</code> just as if it were a .SCSS file?</p>
  
  <p>I'm using a third-party library (<a href="http://code.google.com/closure/library/" rel="noreferrer">Google Closure Library</a>) with many .CSS files.  I'm only using a few of these in my project.  I'd rather avoid manual solutions such as renaming all these files as .SCSS (although this seems to work) or copying and pasting their contents into my .SCSS file (also works).  And I don't want to serve them all to be imported on the client-side.  I'd really just like Sass to include the few .CSS files that I use 'as is' and produce a single output stylesheet.  Possible?  Are there any other tools I should look at?</p>