Can't add edge web fonts to Dreamweaver

Hi,

I'm trying to add a font from the Edge Web library to my css file on Dreamweaver. I get as far as it being included in my font drop-down list but if I add it, it doesn't affect my webpage: 

.heading {
	font-family: "merienda-one";
}

 Apparently an additional script tag is supposed to be added automatically referencing the font Javascript file. This doesn't happen. How do I fix this issue?