diff --git a/themes/quark-open-publishing/css/custom.css b/themes/quark-open-publishing/css/custom.css
index 575623eb..430dbbc3 100644
--- a/themes/quark-open-publishing/css/custom.css
+++ b/themes/quark-open-publishing/css/custom.css
@@ -38,5 +38,5 @@
 
 .e-content {
 	background-color: green;
-	max-width: 80vw;
+	width: 40vw;
 }