diff --git a/packages/tailwindcss-language-service/src/diagnostics/getCssConflictDiagnostics.ts b/packages/tailwindcss-language-service/src/diagnostics/getCssConflictDiagnostics.ts
index e73aab6ccf35957193efb9b05ab017f26202dad9..4459d249bed274dee0a18fe58c3db84f9574acf2 100644
--- a/packages/tailwindcss-language-service/src/diagnostics/getCssConflictDiagnostics.ts
+++ b/packages/tailwindcss-language-service/src/diagnostics/getCssConflictDiagnostics.ts
@@ -20,9 +20,7 @@   let diagnostics: CssConflictDiagnostic[] = []
   const classLists = await findClassListsInDocument(state, document)
 
   classLists.forEach((classList) => {
-    const classNames = Array.isArray(classList)
-      ? classList.flatMap(getClassNamesInClassList)
-      : getClassNamesInClassList(classList)
+    const classNames = getClassNamesInClassList(classList)
 
     classNames.forEach((className, index) => {
       if (state.jit) {

diff --git a/packages/tailwindcss-language-service/src/diagnostics/getRecommendedVariantOrderDiagnostics.ts b/packages/tailwindcss-language-service/src/diagnostics/getRecommendedVariantOrderDiagnostics.ts
index 51e8e82121e37d54f42458b702341285e167b3fd..236195719ef87e1f693a7ccb1e2f23ad0ccd5652 100644
--- a/packages/tailwindcss-language-service/src/diagnostics/getRecommendedVariantOrderDiagnostics.ts
+++ b/packages/tailwindcss-language-service/src/diagnostics/getRecommendedVariantOrderDiagnostics.ts
@@ -22,7 +22,7 @@
   let diagnostics: RecommendedVariantOrderDiagnostic[] = []
   const classLists = await findClassListsInDocument(state, document)
 
-  classLists.flat().forEach((classList) => {
+  classLists.forEach((classList) => {
     const classNames = getClassNamesInClassList(classList)
     classNames.forEach((className) => {
       let { rules } = jit.generateRules(state, [className.className])

diff --git a/packages/tailwindcss-language-service/src/documentColorProvider.ts b/packages/tailwindcss-language-service/src/documentColorProvider.ts
index f40b93a64449d0f47a95584c7e7e791a894c1e19..081d1c0c8086a553d36727711fb0aae744d38ca9 100644
--- a/packages/tailwindcss-language-service/src/documentColorProvider.ts
+++ b/packages/tailwindcss-language-service/src/documentColorProvider.ts
@@ -20,7 +20,7 @@   let settings = await state.editor.getConfiguration(document.uri)
   if (settings.tailwindCSS.colorDecorators === false) return colors
 
   let classLists = await findClassListsInDocument(state, document)
-  classLists.flat().forEach((classList) => {
+  classLists.forEach((classList) => {
     let classNames = getClassNamesInClassList(classList)
     classNames.forEach((className) => {
       let color = getColor(state, className.className)

diff --git a/packages/tailwindcss-language-service/src/util/find.ts b/packages/tailwindcss-language-service/src/util/find.ts
index d0ad26681d864cb45c0d893a556e2bd88cc44497..d9a23c461e9c490c4d9708b6768822329c04c25d 100644
--- a/packages/tailwindcss-language-service/src/util/find.ts
+++ b/packages/tailwindcss-language-service/src/util/find.ts
@@ -77,15 +77,7 @@   mode?: 'html' | 'css',
   includeCustom: boolean = true
 ): Promise<DocumentClassName[]> {
   const classLists = await findClassListsInRange(state, doc, range, mode, includeCustom)
-  return flatten(
-    classLists.flatMap((classList) => {
-      if (Array.isArray(classList)) {
-        return classList.map(getClassNamesInClassList)
-      } else {
-        return [getClassNamesInClassList(classList)]
-      }
-    })
-  )
+  return flatten(classLists.map(getClassNamesInClassList))
 }
 
 export async function findClassNamesInDocument(
@@ -93,15 +85,7 @@   state: State,
   doc: TextDocument
 ): Promise<DocumentClassName[]> {
   const classLists = await findClassListsInDocument(state, doc)
-  return flatten(
-    classLists.flatMap((classList) => {
-      if (Array.isArray(classList)) {
-        return classList.map(getClassNamesInClassList)
-      } else {
-        return [getClassNamesInClassList(classList)]
-      }
-    })
-  )
+  return flatten(classLists.map(getClassNamesInClassList))
 }
 
 export function findClassListsInCssRange(doc: TextDocument, range?: Range): DocumentClassList[] {
@@ -198,7 +182,7 @@ export async function findClassListsInHtmlRange(
   state: State,
   doc: TextDocument,
   range?: Range
-): Promise<Array<DocumentClassList | DocumentClassList[]>> {
+): Promise<DocumentClassList[]> {
   const text = doc.getText(range)
 
   const matches = matchClassAttributes(
@@ -206,7 +190,7 @@     text,
     (await state.editor.getConfiguration(doc.uri)).tailwindCSS.classAttributes
   )
 
-  const result: Array<DocumentClassList | DocumentClassList[]> = []
+  const result: DocumentClassList[] = []
 
   matches.forEach((match) => {
     const subtext = text.substr(match.index + match[0].length - 1)
@@ -217,11 +201,9 @@         ? getComputedClassAttributeLexer()
         : getClassAttributeLexer()
     lexer.reset(subtext)
 
-    let classLists: Array<{ value: string; offset: number } | { value: string; offset: number }[]> =
-      []
-    let rootClassList: { value: string; offset: number }[] = []
+    let classLists: { value: string; offset: number }[] = []
+    let token: moo.Token
     let currentClassList: { value: string; offset: number }
-    let depth = 0
 
     try {
       for (let token of lexer) {
@@ -236,53 +218,56 @@             }
           }
         } else {
           if (currentClassList) {
-            if (depth === 0) {
-              rootClassList.push({
-                value: currentClassList.value,
-                offset: currentClassList.offset,
-              })
-            } else {
-              classLists.push({
-                value: currentClassList.value,
-                offset: currentClassList.offset,
-              })
-            }
+            classLists.push({
+              value: currentClassList.value,
+              offset: currentClassList.offset,
+            })
           }
           currentClassList = undefined
         }
-        if (token.type === 'lbrace') {
-          depth += 1
-        } else if (token.type === 'rbrace') {
-          depth -= 1
-        }
       }
     } catch (_) {}
 
     if (currentClassList) {
-      if (depth === 0) {
-        rootClassList.push({
-          value: currentClassList.value,
-          offset: currentClassList.offset,
-        })
-      } else {
-        classLists.push({
-          value: currentClassList.value,
-          offset: currentClassList.offset,
-        })
-      }
+      classLists.push({
+        value: currentClassList.value,
+        offset: currentClassList.offset,
+      })
     }
 
-    classLists.push(rootClassList)
-
     result.push(
       ...classLists
-        .map((classList) => {
-          if (Array.isArray(classList)) {
-            return classList
-              .map((classList) => resolveClassList(classList, text, match, range))
-              .filter((x) => x !== null)
-          } else {
-            return resolveClassList(classList, text, match, range)
+        .map(({ value, offset }) => {
+          if (value.trim() === '') {
+            return null
+          }
+
+          const before = value.match(/^\s*/)
+          const beforeOffset = before === null ? 0 : before[0].length
+          const after = value.match(/\s*$/)
+          const afterOffset = after === null ? 0 : -after[0].length
+
+          const start = indexToPosition(
+            text,
+            match.index + match[0].length - 1 + offset + beforeOffset
+          )
+          const end = indexToPosition(
+            text,
+            match.index + match[0].length - 1 + offset + value.length + afterOffset
+          )
+
+          return {
+            classList: value.substr(beforeOffset, value.length + afterOffset),
+            range: {
+              start: {
+                line: (range?.start.line || 0) + start.line,
+                character: (end.line === 0 ? range?.start.character || 0 : 0) + start.character,
+              },
+              end: {
+                line: (range?.start.line || 0) + end.line,
+                character: (end.line === 0 ? range?.start.character || 0 : 0) + end.character,
+              },
+            },
           }
         })
         .filter((x) => x !== null)
@@ -292,51 +277,14 @@
   return result
 }
 
-function resolveClassList(
-  classList: { value: string; offset: number },
-  text: string,
-  match: RegExpMatchArray,
-  range?: Range
-): DocumentClassList {
-  let { value, offset } = classList
-  if (value.trim() === '') {
-    return null
-  }
-
-  const before = value.match(/^\s*/)
-  const beforeOffset = before === null ? 0 : before[0].length
-  const after = value.match(/\s*$/)
-  const afterOffset = after === null ? 0 : -after[0].length
-
-  const start = indexToPosition(text, match.index + match[0].length - 1 + offset + beforeOffset)
-  const end = indexToPosition(
-    text,
-    match.index + match[0].length - 1 + offset + value.length + afterOffset
-  )
-
-  return {
-    classList: value.substr(beforeOffset, value.length + afterOffset),
-    range: {
-      start: {
-        line: (range?.start.line || 0) + start.line,
-        character: (end.line === 0 ? range?.start.character || 0 : 0) + start.character,
-      },
-      end: {
-        line: (range?.start.line || 0) + end.line,
-        character: (end.line === 0 ? range?.start.character || 0 : 0) + end.character,
-      },
-    },
-  }
-}
-
 export async function findClassListsInRange(
   state: State,
   doc: TextDocument,
   range?: Range,
   mode?: 'html' | 'css',
   includeCustom: boolean = true
-): Promise<Array<DocumentClassList | DocumentClassList[]>> {
-  let classLists: Array<DocumentClassList | DocumentClassList[]>
+): Promise<DocumentClassList[]> {
+  let classLists: DocumentClassList[]
   if (mode === 'css') {
     classLists = findClassListsInCssRange(doc, range)
   } else {
@@ -348,7 +296,7 @@
 export async function findClassListsInDocument(
   state: State,
   doc: TextDocument
-): Promise<Array<DocumentClassList | DocumentClassList[]>> {
+): Promise<DocumentClassList[]> {
   if (isCssDoc(state, doc)) {
     return findClassListsInCssRange(doc)
   }