diff --git a/src/gui/css/mainStyleSheet.tw b/src/gui/css/mainStyleSheet.tw
index d1c81160e5f09b53e9190e7cf597f281dd917345..78c3f7932a002826a40c560589b868e5c5935fa7 100644
--- a/src/gui/css/mainStyleSheet.tw
+++ b/src/gui/css/mainStyleSheet.tw
@@ -249,6 +249,7 @@ span.zeroButton > a:hover { text-decoration: none; }
 div.output{
 width: 100%;
 width: 100vw;
+max-width: 100%;
 word-break: break-all;
 white-space: normal;
 }