I’ve just added :class "dark" so that my project has it added to my <html> tag on reload…
(defn base-html
[{:base/keys [title
description
lang
image
icon
url
canonical
font-families
head]}
& contents]
[:html
{:lang lang
:class "dark"
:style {:min-height "100%"
:height "auto"}}
...
in this file ~/.gitlibs/libs/com.biffweb/biff/09ef8cef88cb699c67de124cbb472bbff0142d69/src/com/biffweb/impl/rum.clj
which works, but I’m guessing that will be overwritten by a newer version of biff when I create a new project at some point, right?yaeh, you definitely don't want to edit that file. Instead you can copy the base-html function into your project and then use that instead of biff/base-html.