Hey there AmandaSumner,
How are you doing today?
This should be possible with some custom CSS. Please try adding the following CSS code in the style.css file of your child theme or add it in your site using the following plugin:
http://wordpress.org/plugins/simple-custom-css
@media screen and (min-width: 37.563em) {
#primary {
float: right;
}
#secondary {
float: left;
}
}
If the code doesn’t work please keep it added and post link to your site and let me know so I can take a look 🙂
Cheers,
Bojan