Default collapsed sidebar filter

[rebelcopenhagen]

Hello.

How do I get the sidebar filtermenu to be collapsed by default, so only the headlines are listed, with a + besides it to open?

The theme is Kalles.

The url is https://www.rebelcopenhagen.dk/collections/nyheder

Thank you

[Taknify]

You have a total custom filters. You either need to hire a Shopify Dev as there is no "one single" answer on how to do that. There needs to be a bit of custom development involved to get the headlines collapsed unless users clicks it.