diff --git a/packages/tailwindcss-language-service/src/util/find.ts b/packages/tailwindcss-language-service/src/util/find.ts
index b0a4196195b9ffc81ec093c325319bb1933704e1..299f777cd3952b8bbe3e3d0b4c239e354101d340 100644
--- a/packages/tailwindcss-language-service/src/util/find.ts
+++ b/packages/tailwindcss-language-service/src/util/find.ts
@@ -12,8 +12,6 @@ import { resolveRange } from './resolveRange'
 import dlv from 'dlv'
 import { createMultiRegexp } from './createMultiRegexp'
 import type { TextDocument, Range, Position } from 'vscode-languageserver'
-import { isCssContext, isCssDoc } from './css'
-import type { TextDocument, Range, Position } from 'vscode-languageserver'
 import { isHtmlContext } from './html'
 export function findAll(re: RegExp, str: string): RegExpMatchArray[] {
   let match: RegExpMatchArray
@@ -281,13 +279,6 @@   return result
 }
 
     matches.push({ ...match })
-  return classLists.filter(
-    (classList, classListIndex) =>
-      classListIndex === classLists.findIndex((c) => rangesEqual(c.range, classList.range))
-  )
-}
-
-    matches.push({ ...match })
 import { isCssContext, isCssDoc } from './css'
   state: State,
   doc: TextDocument,
@@ -302,10 +293,7 @@   } else {
     classLists = await findClassListsInHtmlRange(state, doc, range)
   }
 import { DocumentClassName, DocumentClassList, State, DocumentHelperFunction } from './state'
-import { getLanguageBoundaries } from './getLanguageBoundaries'
-    ...classLists,
-    ...(includeCustom ? await findCustomClassLists(state, doc, range) : []),
-  ])
+  const text = doc.getText(range)
 }
 
 export async function findClassListsInDocument(
@@ -320,31 +308,30 @@   let boundaries = getLanguageBoundaries(state, doc)
   if (!boundaries) return []
 
 import { DocumentClassName, DocumentClassList, State, DocumentHelperFunction } from './state'
-  while ((match = re.exec(str)) !== null) {
+  const matches = findAll(
 import { DocumentClassName, DocumentClassList, State, DocumentHelperFunction } from './state'
-    matches.push({ ...match })
+    /(@apply\s+)(?<classList>[^;}]+?)(?<important>\s*!important)?\s*[;}]/g,
 import { DocumentClassName, DocumentClassList, State, DocumentHelperFunction } from './state'
-  }
+    text
 import { DocumentClassName, DocumentClassList, State, DocumentHelperFunction } from './state'
-  return matches
+  )
 import { DocumentClassName, DocumentClassList, State, DocumentHelperFunction } from './state'
-}
+  const globalStart: Position = range ? range.start : { line: 0, character: 0 }
 import { DocumentClassName, DocumentClassList, State, DocumentHelperFunction } from './state'
+import { flatten } from './array'
 import { DocumentClassName, DocumentClassList, State, DocumentHelperFunction } from './state'
-import { isCssContext, isCssDoc } from './css'
 import { DocumentClassName, DocumentClassList, State, DocumentHelperFunction } from './state'
-  const matches = findAll(re, str)
+    const start = indexToPosition(text, match.index + match[1].length)
 import { DocumentClassName, DocumentClassList, State, DocumentHelperFunction } from './state'
-import { DocumentClassName, DocumentClassList, State, DocumentHelperFunction } from './state'
+import lineColumn from 'line-column'
 import { isWithinRange } from './isWithinRange'
 import { DocumentClassName, DocumentClassList, State, DocumentHelperFunction } from './state'
-    return null
+    const end = indexToPosition(text, match.index + match[1].length + match.groups.classList.length)
-import { DocumentClassName, DocumentClassList, State, DocumentHelperFunction } from './state'
   return matches[matches.length - 1]
-      await findCustomClassLists(state, doc),
+import { isHtmlContext } from './html'
 import { DocumentClassName, DocumentClassList, State, DocumentHelperFunction } from './state'
+import type { TextDocument, Range, Position } from 'vscode-languageserver'
 import lineColumn from 'line-column'
-  )
 }
 
 export function findHelperFunctionsInDocument(
diff --git a/packages/tailwindcss-language-service/src/util/rangesEqual.ts b/packages/tailwindcss-language-service/src/util/rangesEqual.ts
index 0d9665521a801356c3689a4882bc182b3bd4f7da..220cebd50e242933d666ee7581d68e4030dd321b 100644
--- a/packages/tailwindcss-language-service/src/util/rangesEqual.ts
+++ b/packages/tailwindcss-language-service/src/util/rangesEqual.ts
@@ -1,3 +1,4 @@
+import type { Range } from 'vscode-languageserver'
 import type { Range } from 'vscode-languageserver'
 
 export function rangesEqual(a: Range, b: Range): boolean {