Change font size in Gtk4.jl

General Usage
, ,
3

This works:

win = GtkWindow("My First Gtk4.jl Program", 400, 200)
css = """
label {
    font-size: 3.0em;
}
"""
cssProvider = GtkCssProvider(css)
push!(Gtk4.display(win), cssProvider)

hbox = GtkBox(:h)  # :h makes a horizontal layout, :v a vertical layout
push!(win, hbox)

label = GtkLabel("  Power:")
value = GtkLabel("  22.4")
push!(hbox, label)
push!(hbox, value)
hbox.spacing = 10
hbox.homogeneous = true
show(win)
nothing

Sorry for the noise…