update elements and fix some bugs

lib/src/prism/components/prism-css.js

 Prism.languages.css = {
         'comment': /\/\*[\w\W]*?\*\//,
         'atrule': {
                 pattern: /@[\w-]+?.*?(;|(?=\s*\{))/i,
                 inside: {
                         'rule': /@[\w-]+/
                         // See rest below
                 }
         },
         'url': /url\((?:(["'])(\\(?:\r\n|[\w\W])|(?!\1)[^\\\r\n])*\1|.*?)\)/i,
         'selector': /[^\{\}\s][^\{\};]*?(?=\s*\{)/,
         'string': /("|')(\\(?:\r\n|[\w\W])|(?!\1)[^\\\r\n])*\1/,
         'property': /(\b|\B)[\w-]+(?=\s*:)/i,
         'important': /\B!important\b/i,
         'function': /[-a-z0-9]+(?=\()/i,
         'punctuation': /[(){};:]/
 };
 
 Prism.languages.css['atrule'].inside.rest = Prism.util.clone(Prism.languages.css);
 
 if (Prism.languages.markup) {
         Prism.languages.insertBefore('markup', 'tag', {
                 'style': {
-                        pattern: /<style[\w\W]*?>[\w\W]*?<\/style>/i,
-                        inside: {
-                                'tag': {
-                                        pattern: /<style[\w\W]*?>|<\/style>/i,
-                                        inside: Prism.languages.markup.tag.inside
-                                },
-                                rest: Prism.languages.css
-                        },
+                        pattern: /(<style[\w\W]*?>)[\w\W]*?(?=<\/style>)/i,
+                        lookbehind: true,
+                        inside: Prism.languages.css,
                         alias: 'language-css'
                 }
         });
         
         Prism.languages.insertBefore('inside', 'attr-value', {
                 'style-attr': {
                         pattern: /\s*style=("|').*?\1/i,
                         inside: {
                                 'attr-name': {
                                         pattern: /^\s*style/i,
                                         inside: Prism.languages.markup.tag.inside
                                 },
                                 'punctuation': /^\s*=\s*['"]|['"]\s*$/,
                                 'attr-value': {
                                         pattern: /.+/i,
                                         inside: Prism.languages.css
                                 }
                         },
                         alias: 'language-css'
                 }
         }, Prism.languages.markup.tag);
 }