Adding custom css

I am using impact theme in shopify and for header part I want that in responsive design the menu will come with image icon which is not coming now through theme feature. So I am using css to implement it. But after writing the css It is saying that invalid css.

the css that I have written →

ul li:nth-child(1)::before {

content: “”;

background-image: url(‘https://encrypted-tbn1.gstatic.com/images?q=tbn:ANd9GcQMZv2eiCuGTkQ3t_uVGto5P1vL1qTFPYvSHkmihVLkc5Z5pcTE’);

}

how to solve this error

:before, :after does not accept in Custom CSS of theme settings.

You can wrap this code into and add it to your theme.liquid file after

So the code like this


@Padma20 , hope you are doing well.

Could you please share your store URL and section where you want to apply this CSS?

Also, please try this CSS if it will work.

ul li:first-child::before {
content: "";
background-image: url('https://encrypted-tbn1.gstatic.com/images?q=tbn:ANd9GcQMZv2eiCuGTkQ3t_uVGto5P1vL1qTFPYvSHkmihVLkc5Z5...');

}

I have tried the above css but it does not take any url. After giving any url it is giving error saying invalid css and invalid url. But url is not invalid.

@Padma20 Could you please share your store URL?