diff --git a/assets/css/dark.css b/assets/css/dark.css
index 43bda3f..4725ba6 100644
--- a/assets/css/dark.css
+++ b/assets/css/dark.css
@@ -17,7 +17,7 @@
         --nav-link-color: #b6b6b6;
 
         --pre-color: #f8f8f2;
-        --pre-bg-color: rgba(175, 184, 193, 0.1);
+        --pre-bg-color: #292b2d;
         --pre-border-color: rgba(175, 184, 193, 0.3);
 
         --bq-color: #ccc;
@@ -55,7 +55,7 @@ html[data-theme='dark'] {
     --nav-link-color: #b6b6b6;
 
     --pre-color: #f8f8f2;
-    --pre-bg-color: rgba(175, 184, 193, 0.1);
+    --pre-bg-color: #292b2d;
     --pre-border-color: rgba(175, 184, 193, 0.3);
 
     --bq-color: #ccc;
diff --git a/assets/css/light.css b/assets/css/light.css
index 4487b08..10a6388 100644
--- a/assets/css/light.css
+++ b/assets/css/light.css
@@ -16,8 +16,8 @@ html[data-theme='light'] {
     --nav-link-color: #696969;
 
     --pre-color: rgb(31, 35, 40);
-    --pre-bg-color: rgba(175, 184, 193, 0.2);
-    --pre-border-color: rgba(175, 184, 193, 0.3);
+    --pre-bg-color: #eff1f2;
+    --pre-border-color: #e1e5e9;
 
     --bq-color: #ccc;
     --hr-color: #ccc;
diff --git a/assets/css/main.css b/assets/css/main.css
index 2f68b1a..cd76a71 100644
--- a/assets/css/main.css
+++ b/assets/css/main.css
@@ -188,6 +188,7 @@ kbd {
 pre code, pre kbd {
     color: inherit;
     background-color: inherit;
+    border: none;
 }
 
 /* Styles */