Question

Something like (contrived LESS example):

.bg() {
    background: (@arguments);
}

#blah{
    .background(red, url('blah'))
    .background(blue)
}

Cheers

Answer 1

This does work in LESSCSS, but you have 2 errors in your code. First, missing semicolons for statement terminators. Second, you defined a .bg() mixin but tried to reference it as .background(). Try this:

.bg() {
    background: (@arguments);
}

#blah{
    .bg(red, url('blah'));
    .bg(blue);
}

The output is exactly like you would expect:

#blah {
  background: red url('blah');
  background: blue;
}

You can run code samples to see if and how things like this compile in LESS CSS using my LESS javascript-based converter (files on GitHub), or just follow the LESSCSS client-side usage instructions to see it working on your own pages.