[bug] CSS Styling doesn't work

[OfflinePing]

What happend?

I get an error when trying to make a style.css Style

Error Message

panic: error marshaling CSS file: line 2: expected style before semicolon

goroutine 1 [running]:
main.main()
        C:/Users/Administrator/GolandProjects/BugReport/main.go:33 +0xa8
exit status 2

Code example

main.go

package main

import (
	_ "embed"
	g "github.com/AllenDang/giu"
)

//go:embed style.css
var cssStyle []byte

func loop() {
	Window := g.SingleWindow()

	Window.Layout(
		g.PopupModal("Popup Modal").Layout(
			g.Label("This is a popup modal"),
			g.Button("Close").OnClick(func() {
				g.CloseCurrentPopup()
			}),
		),
		g.Row(
			g.Button("Open Popup Modal").OnClick(func() {
				g.OpenPopup("Popup Modal")
			}),
		),
	)
}

func main() {
	wnd := g.NewMasterWindow("Cloud - Universal", 750, 500, g.MasterWindowFlagsNotResizable)

	if err := g.ParseCSSStyleSheet(cssStyle); err != nil {
		panic(err)
	}

	wnd.Run(loop)
}

style.css

main {
    background-color: black;
}

To Reproduce

1. Run my demo
2. will see the crash...

Version

master

OS

Windows 11