bundle failed for css with direct child combinator

Question

I'm using visual studio 2022. Following the steps on https://www.syncfusion.com/faq/blazor/general/how-do-you-bundle-and-minify-the-css-and-js-files-in-blazor-applications

After creating bundleconfig.json and adding my css files references I compile the and visual studios shows expected identifier, found '>'.

div:has(> a:focus) {
    /* Some declarations */
}