Add currency into number field

Hi there,

I would like to add the currency “€” into my number field.

So I created [number your-budget] and I would like that users add their budget with a number and having the display of “€”.

I tried to use CSS to display it with that property :

.your-budget .wpcf7-number {
content: ‘€’;
}

But it didn’t work at all.

Could you please help me ?

Many thanks in advance.