Superset dashboard CSS, which path to locate font on server?

[rluech]

I'd like to use a custom font. The woff file is uploaded to our Superset server to:
/app/superset/static/assets/fonts/myfont/web/myfont-regular.woff

I add this to edit-CSS:

@font-face {
    font-family:'myfont';
    src: url('/app/superset/static/assets/fonts/myfont/web/myfont-regular.woff')  format('woff');
}
body{ font-family: 'myfont' !important; }

It doesn't work (fall back to times new roman).
What is the root directory from which the path to woff has to be specified ?
Eg. the code above works fine for a html file that is located just above /app.

[rluech]

Answer: the root seems to be above /static. So, this works:

/static/assets/fonts/myfont/web/myfont-regular.woff