Support for pseudo tags

Not sure if this is by design, or a configuration option, but something like

`
a:hover {
text-decoration: none;
}
`

doesn't seem to get inlined

Start by reproducing the issue with the provided snippet and inspect the repository's CSS-inlining entry points. Determine whether pseudo tags are intended to be supported or controlled by configuration; done means the behavior is implemented consistently or its unsupported status is clearly documented.

Written by the indexing model from the issue text.