text: (function (Prism) {
  
  	var string = /("|')(?:\\(?:\r\n|[\s\S])|(?!\1)[^\\\r\n])*\1/;
  	var selectorInside;
  
  	Prism.languages.css.selector = {
  		pattern: Prism.languages.css.selector.pattern,
  		lookbehind: true,
  		inside: selectorInside = {
  			'pseudo-element': /:(?:after|before|first-letter|first-line|selection)|::[-\w]+/,
  			'pseudo-class': /:[-\w]+/,
  			'class': /\.[-\w]+/,
  			'id': /#[-\w]+/,
  			'attribute': {
  				pattern: RegExp('\\[(?:[^[\\]"\']|' + string.source + ')*\\]'),
  				greedy: true,
  				inside: {
  					'punctuation': /^\[|\]$/,
  					'case-sensitivity': {
  						pattern: /(\s)[si]$/i,
  						lookbehind: true,
  						alias: 'keyword'
  					},
  					'namespace': {
  						pattern: /^(\s*)(?:(?!\s)[-*\w\xA0-\uFFFF])*\|(?!=)/,
  						lookbehind: true,
  						inside: {
  							'punctuation': /\|$/
  						}
  					},
  					'attr-name': {
  						pattern: /^(\s*)(?:(?!\s)[-\w\xA0-\uFFFF])+/,
  						lookbehind: true
  					},
  					'attr-value': [
  						string,
  						{
  							pattern: /(=\s*)(?:(?!\s)[-\w\xA0-\uFFFF])+(?=\s*$)/,
  							lookbehind: true
  						}
  					],
  					'operator': /[|~*^$]?=/
  				}
  			},
  			'n-th': [
  				{
  					pattern: /(\(\s*)[+-]?\d*[\dn](?:\s*[+-]\s*\d+)?(?=\s*\))/,
  					lookbehind: true,
  					inside: {
  						'number': /[\dn]+/,
  						'operator': /[+-]/
  					}
  				},
  				{
  					pattern: /(\(\s*)(?:even|odd)(?=\s*\))/i,
  					lookbehind: true
  				}
  			],
  			'combinator': />|\+|~|\|\|/,
  
  			// the `tag` token has been existed and removed.
  			// because we can't find a perfect tokenize to match it.
  			// if you want to add it, please read https://github.com/PrismJS/prism/pull/2373 first.
  
  			'punctuation': /[(),]/,
  		}
  	};
  
  	Prism.languages.css['atrule'].inside['selector-function-argument'].inside = selectorInside;
  
  	Prism.languages.insertBefore('css', 'property', {
  		'variable': {
  			pattern: /(^|[^-\w\xA0-\uFFFF])--(?!\s)[-_a-z\xA0-\uFFFF](?:(?!\s)[-\w\xA0-\uFFFF])*/i,
  			lookbehind: true
  		}
  	});
  
  	var unit = {
  		pattern: /(\b\d+)(?:%|[a-z]+(?![\w-]))/,
  		lookbehind: true
  	};
  	// 123 -123 .123 -.123 12.3 -12.3
  	var number = {
  		pattern: /(^|[^\w.-])-?(?:\d+(?:\.\d+)?|\.\d+)/,
  		lookbehind: true
  	};
  
  	Prism.languages.insertBefore('css', 'function', {
  		'operator': {
  			pattern: /(\s)[+\-*\/](?=\s)/,
  			lookbehind: true
  		},
  		// CAREFUL!
  		// Previewers and Inline color use hexcode and color.
  		'hexcode': {
  			pattern: /\B#[\da-f]{3,8}\b/i,
  			alias: 'color'
  		},
  		'color': [
  			{
  				pattern: /(^|[^\w-])(?:AliceBlue|AntiqueWhite|Aqua|Aquamarine|Azure|Beige|Bisque|Black|BlanchedAlmond|Blue|BlueViolet|Brown|BurlyWood|CadetBlue|Chartreuse|Chocolate|Coral|CornflowerBlue|Cornsilk|Crimson|Cyan|DarkBlue|DarkCyan|DarkGoldenRod|DarkGr[ae]y|DarkGreen|DarkKhaki|DarkMagenta|DarkOliveGreen|DarkOrange|DarkOrchid|DarkRed|DarkSalmon|DarkSeaGreen|DarkSlateBlue|DarkSlateGr[ae]y|DarkTurquoise|DarkViolet|DeepPink|DeepSkyBlue|DimGr[ae]y|DodgerBlue|FireBrick|FloralWhite|ForestGreen|Fuchsia|Gainsboro|GhostWhite|Gold|GoldenRod|Gr[ae]y|Green|GreenYellow|HoneyDew|HotPink|IndianRed|Indigo|Ivory|Khaki|Lavender|LavenderBlush|LawnGreen|LemonChiffon|LightBlue|LightCoral|LightCyan|LightGoldenRodYellow|LightGr[ae]y|LightGreen|LightPink|LightSalmon|LightSeaGreen|LightSkyBlue|LightSlateGr[ae]y|LightSteelBlue|LightYellow|Lime|LimeGreen|Linen|Magenta|Maroon|MediumAquaMarine|MediumBlue|MediumOrchid|MediumPurple|MediumSeaGreen|MediumSlateBlue|MediumSpringGreen|MediumTurquoise|MediumVioletRed|MidnightBlue|MintCream|MistyRose|Moccasin|NavajoWhite|Navy|OldLace|Olive|OliveDrab|Orange|OrangeRed|Orchid|PaleGoldenRod|PaleGreen|PaleTurquoise|PaleVioletRed|PapayaWhip|PeachPuff|Peru|Pink|Plum|PowderBlue|Purple|Red|RosyBrown|RoyalBlue|SaddleBrown|Salmon|SandyBrown|SeaGreen|SeaShell|Sienna|Silver|SkyBlue|SlateBlue|SlateGr[ae]y|Snow|SpringGreen|SteelBlue|Tan|Teal|Thistle|Tomato|Transparent|Turquoise|Violet|Wheat|White|WhiteSmoke|Yellow|YellowGreen)(?![\w-])/i,
  				lookbehind: true
  			},
  			{
  				pattern: /\b(?:hsl|rgb)\(\s*\d{1,3}\s*,\s*\d{1,3}%?\s*,\s*\d{1,3}%?\s*\)\B|\b(?:hsl|rgb)a\(\s*\d{1,3}\s*,\s*\d{1,3}%?\s*,\s*\d{1,3}%?\s*,\s*(?:0|0?\.\d+|1)\s*\)\B/i,
  				inside: {
  					'unit': unit,
  					'number': number,
  					'function': /[\w-]+(?=\()/,
  					'punctuation': /[(),]/
  				}
  			}
  		],
  		// it's important that there is no boundary assertion after the hex digits
  		'entity': /\\[\da-f]{1,8}/i,
  		'unit': unit,
  		'number': number
  	});
  
  }(Prism));
  