diff --git a/css/html_bubble_chat_style.css b/css/html_bubble_chat_style.css
index 77090b6c..a54a1073 100644
--- a/css/html_bubble_chat_style.css
+++ b/css/html_bubble_chat_style.css
@@ -2,7 +2,7 @@
     margin-left: auto;
     margin-right: auto;
     max-width: 800px;
-    height: calc(100vh - 300px);
+    height: calc(100vh - 306px);
     overflow-y: auto;
     padding-right: 20px;
     display: flex;
diff --git a/css/html_cai_style.css b/css/html_cai_style.css
index 04a9d90d..f601de32 100644
--- a/css/html_cai_style.css
+++ b/css/html_cai_style.css
@@ -2,7 +2,7 @@
     margin-left: auto;
     margin-right: auto;
     max-width: 800px;
-    height: calc(100vh - 300px);
+    height: calc(100vh - 306px);
     overflow-y: auto;
     padding-right: 20px;
     display: flex;
diff --git a/css/html_instruct_style.css b/css/html_instruct_style.css
index dc7f5a06..55c66fd2 100644
--- a/css/html_instruct_style.css
+++ b/css/html_instruct_style.css
@@ -2,7 +2,7 @@
     margin-left: auto;
     margin-right: auto;
     max-width: 800px;
-    height: calc(100vh - 300px);
+    height: calc(100vh - 306px);
     overflow-y: auto;
     padding-right: 20px;
     display: flex;
@@ -47,7 +47,7 @@
 }
 
 .dark .message-body p em {
-    color: rgb(138, 138, 138) !important;
+    color: rgb(198, 202, 214) !important;
 }
 
 .message-body p em {