diff --git a/content/common/kwant.css b/content/common/kwant.css
index 8751431deb9305b26e8a3f7277db33f7343bf520..ee5b58e502fd6f6ed0bfa21fe2bfb3a465c5b068 100644
--- a/content/common/kwant.css
+++ b/content/common/kwant.css
@@ -87,6 +87,7 @@ img {
 }
 
 pre, code { background-color: #eee; border: 1px solid #ccc; }
+pre.literal-block { overflow: hidden }
 pre { padding: 0.3em; }
 code { padding: 0 0.1em; }
 pre > code { border: none; padding: 0; }