Remove all arbitary spaces before a line in Vim

Question

I\'v written a plugin where it comes to parsing a XML tag. The content inside the tag is indented and when i copy the parsed string into the file it\'s gettting like:

<

Answer 1

Remove all consecutive spaces: :%s/ */ /g

It was useful to me to go from:

$screen-xs-min:              480px;
$screen-sm-min:              768px;
$screen-md-min:                992px;
$screen-lg-min:                  1200px;

To:

$screen-xs-min: 480px;       
$screen-sm-min: 768px;       
$screen-md-min: 992px;           
$screen-lg-min: 1200px;