diff --git a/hledger-web/static/hledger.css b/hledger-web/static/hledger.css
index 5703f92cb..798447de1 100644
--- a/hledger-web/static/hledger.css
+++ b/hledger-web/static/hledger.css
@@ -86,6 +86,11 @@ ul {
     padding-left: 30px;
 }
 
+#message {
+    white-space: pre;
+    overflow-x: auto;
+}
+
 #sidebar-menu {
     overflow:hidden;
     border-right: 1px solid #ebebeb;