How do I fix a dropdown menu bug?

I don’t want my menu to look like this when clicking it. How do i fix this?

Hello, nocco00, could you provide website url?

Www.menswearsweden.com

go to online store > themes > ‘…’ button > edit code, and at the end of base.css, add this:

.header__icon--menu {
width: auto;
}

That didn’t work

How do you want it to look? In here, now the background is covering the words

I want it to looke like it’s supposed to on that theme, it’s not supposed to just be a black square with text, it’s supposed to slide and stuff