diff --git a/src/events/intro/customizeSlaveTrade/customizeSlaveTrade.css b/src/events/intro/customizeSlaveTrade/customizeSlaveTrade.css
index 3eb07697b5d2d4b244b4f715b88f735e6b7fe6ab..a526d03d54bf41dd65b9e3cb58a92e4d77e1892e 100644
--- a/src/events/intro/customizeSlaveTrade/customizeSlaveTrade.css
+++ b/src/events/intro/customizeSlaveTrade/customizeSlaveTrade.css
@@ -9,7 +9,7 @@
     text-align: center;
     display: inline-block;
     padding-bottom: 20px;
-    width: 200px;
+    width: 15em;
 }
 
 span.plusButton {