diff --git a/public/theme/default.css b/public/theme/default.css
index 23b67c4..713c03d 100644
--- a/public/theme/default.css
+++ b/public/theme/default.css
@@ -46,6 +46,7 @@ h1, h2, h3, h4, h5 {
 h1, h2 {
     font-size: 14px;
     padding: 0 8px;
+    word-break: break-word;
 }
 
 table {