Fixed max-width b/c text overriding on promo-btn

Author: jimmytipit

themes/openstack/css/combined.css

@@ -1173,7 +1173,7 @@ a.promo-btn {
   padding: 7px 60px;
   margin: 0 auto;
   text-align: center;
-  max-width: 369px;
+  min-width: 250px;
   display: inline-block;
   line-height: 2;
   }