fixed redering issue related to media queries condition using "or"

lib/single-file/css-minifier.js

@@ -386,6 +386,7 @@ this.uglifycss = this.uglifycss || (() => {
 	const REGEXP_NEWLINE2 = /\*\/\s*/g;
 	const REGEXP_RESTORE_SPACE1 = /\band\(/gi;
 	const REGEXP_RESTORE_SPACE2 = /([^:])not\(/gi;
+	const REGEXP_RESTORE_SPACE3 = /\bor\(/gi;
 	const REGEXP_REMOVE_SPACES3 = /([!{}:;>+([,])\s+/g;
 	const REGEXP_REMOVE_SEMI_COLUMNS = /;+\}/g;
 	const REGEXP_REPLACE_ZERO = /(^|[^.0-9\\])(?:0?\.)?0(?:ex|ch|r?em|vw|vh|vmin|vmax|cm|mm|in|pt|pc|px|deg|g?rad|turn|m?s|k?Hz|dpi|dpcm|dppx|%)(?![a-z0-9])/gi;
@@ -634,6 +635,7 @@ this.uglifycss = this.uglifycss || (() => {
 		// @media screen and (-webkit-min-device-pixel-ratio:0){
 		content = content.replace(REGEXP_RESTORE_SPACE1, "and (");
 		content = content.replace(REGEXP_RESTORE_SPACE2, "$1not (");
+		content = content.replace(REGEXP_RESTORE_SPACE3, "or (");
 
 		// remove the spaces after the things that should not have spaces after them.
 		content = content.replace(REGEXP_REMOVE_SPACES3, "$1");