'How to add css file link in pug

I need to add css file named feed.js with a pug file named feed.pug. i am trying this in feed.pug but it is not working

link(rel='stylesheet', type='text/css', href='feed.css')

this is my css code;

body{
    background-color: red;
}

I have also tried one or two solutions from stackoverflow but this is not working. pugjs(jade) template engine loading css file

Need help :)

pug

Sources

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