Collections pages filter dropdown not staying open

[grn_raine]

Greetings! 

I've come across an issue that I've never seen before and I cannot find an answer to. 

Theme: Plantan

The filter options on our website (in collections pages: https://www.tropico.ca/collections/plants#flt_cate) suddenly are not working. You can click on them, and for a brief second, they will appear then snap closed again. 

They were working fine as of Monday, and we noticed the change yesterday. I've gone over any changes to the code, as well as any recently added apps, but I could not find anything. I've been trying to figure this out for the past day and a half and would love it if anyone had any insights. 

Thank you in advance!

[devangfour · Accepted solution]

Hello @grn_raine 

Just add below CSS

.collapse.in {
    display: block;
}

[grn_raine]

@devangfour Thank you for your prompt reply! I have tried to add the code - but it is entirely possible I tried in the wrong area. Where would you recommend adding it? 

[devangfour]

Yes please add code here

1. Go to Online Store->Theme->Edit code
2. Asset->/theme.scss.liquid->paste above code at the bottom of the file.