From:
var asset = GetOrCreateBundle(item.Src, (bundleKey, assetFiles) =>
{
return _assetPipeline.AddBundle(bundleKey, $"{MimeTypes.TextCss}; charset=UTF-8", assetFiles)
.EnforceFileExtensions(".css")
.AdjustRelativePaths()
.Concatenate()
.AddResponseHeader(HeaderNames.XContentTypeOptions, "nosniff")
.MinifyCss();
});
to
var asset = GetOrCreateBundle(item.Src, (bundleKey, assetFiles) =>
{
return _assetPipeline.AddBundle(bundleKey, $"{MimeTypes.TextCss}; charset=UTF-8", assetFiles)
.EnforceFileExtensions(".css")
.AdjustRelativePaths()
.Concatenate()
.AddResponseHeader(HeaderNames.XContentTypeOptions, "nosniff");
});
Css files will be minified only when bundled.