diff --git a/packages/tailwindcss-language-service/src/util/getLanguageBoundaries.ts b/packages/tailwindcss-language-service/src/util/getLanguageBoundaries.ts
index c60c43c93f7cf6b3974decfeb5565f9ec3d2efce..89773118f52d5cd5c0358158b84e58d4f487f290 100644
--- a/packages/tailwindcss-language-service/src/util/getLanguageBoundaries.ts
+++ b/packages/tailwindcss-language-service/src/util/getLanguageBoundaries.ts
@@ -9,10 +9,7 @@   html: Range[]
   css: Range[]
 }
 
-export function getLanguageBoundaries(
-  state: State,
-  doc: TextDocument
-): LanguageBoundaries | null {
+export function getLanguageBoundaries(state: State, doc: TextDocument): LanguageBoundaries | null {
   if (isVueDoc(doc)) {
     let text = doc.getText()
     let blocks = findAll(
@@ -23,10 +20,7 @@     let htmlRanges: Range[] = []
     let cssRanges: Range[] = []
     for (let i = 0; i < blocks.length; i++) {
       let range = {
-        start: indexToPosition(
-          text,
-          blocks[i].index + blocks[i].groups.open.length
-        ),
+        start: indexToPosition(text, blocks[i].index + blocks[i].groups.open.length),
         end: indexToPosition(
           text,
           blocks[i].index + blocks[i][0].length - blocks[i].groups.close.length
@@ -48,7 +42,7 @@
   if (isHtmlDoc(state, doc) || isJsDoc(state, doc) || isSvelteDoc(doc)) {
     let text = doc.getText()
     let styleBlocks = findAll(
-      /(?<open><style(?:\s[^>]*>|>)).*?(?<close><\/style>|$)/gis,
+      /(?<open><style(?:\s[^>]*[^\/]>|>|[^\/]>)).*?(?<close><\/style>|$)/gis,
       text
     )
     let htmlRanges: Range[] = []
@@ -61,15 +55,10 @@         start: indexToPosition(text, currentIndex),
         end: indexToPosition(text, styleBlocks[i].index),
       })
       cssRanges.push({
-        start: indexToPosition(
-          text,
-          styleBlocks[i].index + styleBlocks[i].groups.open.length
-        ),
+        start: indexToPosition(text, styleBlocks[i].index + styleBlocks[i].groups.open.length),
         end: indexToPosition(
           text,
-          styleBlocks[i].index +
-            styleBlocks[i][0].length -
-            styleBlocks[i].groups.close.length
+          styleBlocks[i].index + styleBlocks[i][0].length - styleBlocks[i].groups.close.length
         ),
       })
       currentIndex = styleBlocks[i].index + styleBlocks[i][0].length

diff --git a/packages/tailwindcss-language-service/src/util/html.ts b/packages/tailwindcss-language-service/src/util/html.ts
index 02b9170e1865ce5ba49daf86bd00c8ff6497b555..af0ab8088139adbda5ef6d93f601d4c66a32f779 100644
--- a/packages/tailwindcss-language-service/src/util/html.ts
+++ b/packages/tailwindcss-language-service/src/util/html.ts
@@ -44,7 +44,7 @@   let open = 0
   let close = 0
   let match: RegExpExecArray
   let tags = Array.isArray(tag) ? tag : [tag]
-  let regex = new RegExp(`<(?<slash>/?)(?:${tags.join('|')})\\b`, 'ig')
+  let regex = new RegExp(`<(?<slash>/?)(?:${tags.join('|')})(?:\\s[^>]*[^\/]>|>|[^\/]>)`, 'ig')
   while ((match = regex.exec(str)) !== null) {
     if (match.groups.slash) {
       close += 1