data-uri - base 64 - fatal error

[PSzabo]

when I used in my css file data uri for image, then compiling is not work

example:

.zrusifiltr{display:block;width:119px;height:31px;background:url("data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAHcAAAAfCAYAAADdnlK9AAAIW0lEQVRo3u2bz6tlRxHHP1Xd9755M6PDTBzzw0RwnBAhRoaIOHHhRhFcKUEUgrpT1+70D1CXIqIrNy4ExbgLRsWFSkjQxKAEE9RJMkZJhsSJ4zzmvXfP6apy0.................") transparent no-repeat;}