letter spacing in css is not working

I have used DinkToPdf to create some PDF reports on my .net core web api. I included UserStyleSheet in ObjectSettings, but letter spacing is not working for some reason, so I’m realy eager to know if I’m doing something wrong or if letter spacing is not supported by the library. Enjoyed using library very much btw.

Here is the css code

h1 {
    text-align: center;
    font-weight: 700;
    font-size: 36px;
    margin-top: 30px;
    letter-spacing: 10px;
}

td, th {
    letter-spacing: 10px;
    height: 35px;
    border-bottom: 1px solid #dedede;
}

and here are the object settings:

  var objectSettings = new ObjectSettings
            {
                PagesCount = true,
                HtmlContent = UnitOfWork.Ucenici.htmlListaRangiranih(muski,zenski),
                
                WebSettings = { DefaultEncoding = "utf-8" ,UserStyleSheet = Path.Combine( _hostingEnvironment.WebRootPath,"PDFStyles","PDFstyle.css")},
                HeaderSettings = { FontName = "Arial", FontSize = 9 },
                FooterSettings = { FontName = "Arial", FontSize = 9 }
            };

[aleksa-kuzman]

Thank you

[zadeabhi]

There is an option smart shrink