Highlighted items are hidden in rustdoc

[fitzgen]

(Originally filed as rustwasm/wasm-bindgen#1192; +cc @liamcurry)

Highlighted items are hidden in the Github pages API docs. Tested in Brave and Firefox.

• Example gh-pages URL: https://rustwasm.github.io/wasm-bindgen/api/web_sys/struct.Element.html#method.set_inner_html
• Example docs.rs URL: https://docs.rs/web-sys/0.3.9/web_sys/struct.Element.html#method.set_inner_html

Highlighted items are invisible due this selector in rustdoc.css:

.in-band, code {
    z-index: -5;
}

versus

[Centril]

@fitzgen Seems like a dupe of #57628?

cc @QuietMisdreavus @GuillaumeGomez

[QuietMisdreavus]

Yes, this is a duplicate. There's also an open PR to fix it: #57646 I'm closing this as a duplicate.

[fitzgen]

Thanks! :)