Thanks, I can now access the source code with the other email address.
I downloaded Bootstrap 5.0.2 and added the SCSS folder into the Volo.Abp.AspNetCore.Mvc.UI.Theme.Lepton application so that the SCSS cod generator does not fail for the references in the following file. Volo.Abp.AspNetCore.Mvc.UI.Theme.Lepton\Themes\Lepton\Global\styles\bootstrap\index.scss
I had to exclude the following reference in the index.scss file, hope that I don't need this //@import "node_modules/bootstrap/scss/placeholders";
The styles seem to be working.
there were sone differences between bootstrap 4 and 5 which I think that I have sorted out.
I am closing this ticket :)
Thanks and regards Tony