ASP.NET CORE SelectPdf - Load external css

Question

I'me using Selectpdf to generate and save PDF files by HTML page. I'm also using bootsrap in my page. I'm loading via https, and I want load locally.

I have this:

<link href="https://cdn.jsdelivr.net/npm/bootstrap@5.1.3/dist/css/bootstrap.min.css" rel="stylesheet" integrity="sha384-1BmE4kWBq78iYhFldvKuhfTAU6auU8tT94WrHftjDbrCEXSU1oBoqyl2QvZ6jIW3" crossorigin="anonymous">
<script src="https://cdn.jsdelivr.net/npm/bootstrap@5.1.3/dist/js/bootstrap.bundle.min.js" integrity="sha384-ka7Sk0Gln4gmtz2MlQnikT1wXgYsOg+OMhuP+IlRH9sENBO0LRn5q+8nbTov4+1p" crossorigin="anonymous"></script>

I want this:

<link  rel="stylesheet" media="all" href="lib/bootstrap-5.1.3-dist/css/bootstrap.min.css" crossorigin="anonymous"/>
<script src="lib/bootstrap-5.1.3-dist/js/bootstrap.bundle.min.js" crossorigin="anonymous"></script>

But when I try load locally, files are not load.

Someone can help me?