Reference custom fonts in design studio

[KZ]

Is it possible to upload custom font files to design studio and references them in html templates? Or do the font stylesheets need to be hosted somewhere else?

This (uploaded fonts to sandbox and production design studio, referencing both):
@font-face {font-family: "Averta-Semibold";
src: url(http://pages2.mindbodyonline.com/rs/327-TQG-964/images/Averta-SemiBold.eot) format("embedded-opentype"),
url(https://pages.mindbodyonline.com/rs/346-JOI-498/images/Averta-SemiBold.eot) format("embedded-opentype");} 

Or this (found location of fonts in website css and using that as a reference)
@font-face{font-family:"Averta-Semibold";font-style:normal;font-weight:600;src:url(https://www.mindbodyonline.com/themes/mindbody/dist/patterns/fonts/3A498A_C_0.eot);src:url(https://w...) format("embedded-opentype"),url(https://www.mindbodyonline.com/themes/mindbody/dist/patterns/fonts/3A498A_C_0.woff2) format("woff2"),url(https://www.mindbodyonline.com/themes/mindbody/dist/patterns/fonts/3A498A_C_0.woff) format("woff"),url(https://www.mindbodyonline.com/themes/mindbody/dist/patterns/fonts/3A498A_C_0.ttf) format("truetype");text-rendering:optimizeLegibility;unicode-range:U+000-5FF}

[SanfordWhiteman · Accepted solution]

Unfortunately, whether it's possible is an instance-by-instance thing.

Your instance uses MIME type text/plain for .eot, so I wouldn't trust it. Other instances serve .eot as octet-stream, which is fine. (Marketo doesn't configure all LP/DS webservers exactly the same.)