diff --git a/src/muya/lib/assets/styles/index.css b/src/muya/lib/assets/styles/index.css
index f2749ae2..3665aa52 100644
--- a/src/muya/lib/assets/styles/index.css
+++ b/src/muya/lib/assets/styles/index.css
@@ -345,6 +345,11 @@ li.ag-task-list-item > input.ag-checkbox-checked ~ * {
   color: var(--regularColor);
 }
 
+li.ag-task-list-item > input.ag-checkbox-checked ~ p {
+  text-decoration: line-through;
+  color: var(--secondaryColor);
+}
+
 li.ag-task-list-item > input[type=checkbox]::before {
   content: '';
   width: 16px;
@@ -475,9 +480,10 @@ pre.ag-active.ag-code-block::before,
 pre.ag-active.ag-code-block::after,
 pre.ag-active.ag-multiple-math::before,
 pre.ag-active.ag-multiple-math::after {
-  color: var(--placeholerColor);
+  color: var(--regularColor);
   font-family: monospace;
   position: absolute;
+  font-weight: 600;
   left: 0;
 }
 
@@ -590,7 +596,8 @@ span.ag-emoji-marked-text {
   left: 30px;
   font-size: 14px;
   font-family: monospace;
-  color: var(--secondaryColor);
+  font-weight: 600;
+  color: var(--activeColor);
   background: transparent;
   border: none;
   z-index: 10;
diff --git a/src/muya/lib/contentState/updateCtrl.js b/src/muya/lib/contentState/updateCtrl.js
index 1e176921..1c581807 100644
--- a/src/muya/lib/contentState/updateCtrl.js
+++ b/src/muya/lib/contentState/updateCtrl.js
@@ -92,8 +92,8 @@ const updateCtrl = ContentState => {
 
   // Input @ to quick insert paragraph
   ContentState.prototype.checkQuickInsert = function (block) {
-    const { type, text } = block
-    if (type !== 'span') return false
+    const { type, text, functionType } = block
+    if (type !== 'span' || functionType) return false
     return /^@[a-zA-Z\d]*$/.test(text)
   }
 
diff --git a/src/muya/lib/ui/quickInsert/index.css b/src/muya/lib/ui/quickInsert/index.css
index ccc32933..8b4dfca1 100644
--- a/src/muya/lib/ui/quickInsert/index.css
+++ b/src/muya/lib/ui/quickInsert/index.css
@@ -33,7 +33,7 @@
 }
 .ag-quick-insert .active,
 .ag-quick-insert div.item:hover {
- background-color: #ecf5ff;
+ background-color: rgb(243, 243, 243);
 }
 
 .ag-quick-insert .no-result {