diff --git a/static/pseudocode.css b/static/pseudocode.css
index 0bf0aca..b43574d 100644
--- a/static/pseudocode.css
+++ b/static/pseudocode.css
@@ -9,11 +9,11 @@
 .ps-root .ps-algorithm {
     margin: 0.8em 0;
     /* algorithm environment has borders; algorithmic has not */
-    border-top: 3px solid black;
-    border-bottom: 2px solid black;
+    border-top: 3px solid;
+    border-bottom: 2px solid;
 }
 .ps-root .ps-algorithm.with-caption > .ps-line:first-child {
-    border-bottom: 2px solid black;
+    border-bottom: 2px solid;
 }
 
 .ps-root .katex {