Font not rendering on some computers

Hello,
I am using your paid plugin version and I am trying to change the font for my headers (h1, h2, h3, etc.), the navigation and the body.
I am using FuturaSTD Oblique Bold for the headers and Futura Book for the body/nav.
I can see the headers with the different font, but some people can’t.
And for the body and navigation, I can’t get the custom font to work at all.
I’ve used this as custom code on my backend
.nav > li > a {font-family: “FuturaStd-BoldOblique”, sans-serif;}
h1,h2,h3,h4,h5,h6, .heading-font{font-family: “FuturaStd-BoldOblique”, sans-serif;}

body{font-family: “Futura Book”, sans-serif}
Please help!

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