I am working on a font for a website and I need to kern some pairs like To, AVA, etc. I did it in Glyphs, then export as webfont, renderer in HTML and set CSS properties to make kerning pairs to work like this:
p {
text-rendering: optimizeLegibility;
font-feature-settings: "kern" 1;
font-kerning: normal;
}
I don’t know why this not working, the font render pretty well, but kern feature. Should I add some custom things at Masters / Instance?
That has nothing to do with kerning. It is most likely a mistake in the CSS, perhaps in the way the font is loaded, but also check the version of Safari you are using: http://caniuse.com/#feat=font-kerning
Are you using an SVG font conversion? SVG fonts do not support kerning.