diff --git a/src/components/d-code.js b/src/components/d-code.js
index 97f1dee..8536492 100644
--- a/src/components/d-code.js
+++ b/src/components/d-code.js
@@ -20,9 +20,8 @@ code {
 
 pre code {
   display: block;
-  background: white;
-  border-left: 3px solid rgba(0, 0, 0, 0.05);
-  padding: 0 0 0 24px;
+  border-left: 2px solid rgba(0, 0, 0, .1);
+  padding: 0 0 0 36px;
 }
 
 ${css}
diff --git a/src/components/d-math.js b/src/components/d-math.js
index 1201ca7..a29a73a 100644
--- a/src/components/d-math.js
+++ b/src/components/d-math.js
@@ -19,7 +19,7 @@ const T = Template('d-math', `
 
 #katex-container .katex-display {
   text-align: left;
-  border-left: 2px solid #ddd;
+  border-left: 2px solid rgba(0, 0, 0, .1);
   padding: 8px 0 8px 36px;
   margin: 20px 0;
   color: rgba(0, 0, 0, 0.7);