the new Firefox does not know Mistral

I use css but the latest Firefox does not always. As Signature I use font Mistral and it used to work. It still does in Chrome Even this little test comes out in Times New Roman, not in Mistral (as it does in Chrome) <!DOCTYPE html> <html> <head> <meta charset="UTF-8"> <style> p { font-family: Mistral; font-size: 32pt; } </style> </head> <body> <p>Dette er en prøve pÃ¥ Mistral-skriften.</p> </body> </html><!DOCTYPE html> <html> <head> <meta charset="UTF-8"> <style> p { font-family: Mistral; font-size: 32pt; } </style> </head> <body> <p>Dette er en prøve på Mistral-skriften.</p> </body> </html> Firefox 159.0.1, Windows 11 Pro