deregister CSS

Hi Allen,

I am trying to group my css files into 1 big file.
To do so, I need to deregister template.css.

I added some code in my functions.php file, ie wp_deregister_style(‘wprssmi_template_styles’). However, template.css keeps loading.

Could you provide me with some help ?

Thanks

https://ww.wp.xz.cn/plugins/wp-rss-multi-importer/