Custom CSS for Texblock

Hi There,

I have a question about my CSS.

I have a textblock with a custom field ‘landingfont’ to edit some text for my landingspage. I tried everything but I think I forget something. What do I wrong?

#top .landingfont {
	font-family: 'Rajdhani', sans-serif;
	color: #ffffff !important;
	font-size: 20px !important;
}