Leave the space after media query `not`

[madmurphy]

The CSS fragment

@media only screen and not (max-width:768px) {

gets minified as

@media only screen and not(max-width:768px){

However that is an error and does not work in Firefox. It should become:

@media only screen and not (max-width:768px){

--madmurphy

[FlowIT-JIT]

Related: #71

[FlowIT-JIT]

Any progress on this issue? The problem dates back to 2019 (see #71). Is there any known work around available, except avoid not ?