Remove Product Category and Sort boxes

I’m trying to use this script to get rid of the product category and sort by drop down menus. It works to get rid of them but for whatever reason the text of the script shows up at the top of my web site. Any help?

.spreadplugin-menu #productCategory {
display:none;
}

.spreadplugin-menu #articleSortBy{
display:none;
}

https://wordpress.org/plugins/wp-spreadplugin/