https://feedly.com/i/entry/Fr3jBijaGYsqKfY0ZJAYuAXvHrE03yR6qzptYNhpnp8=_15ee27e429b:3e3344:6aebb31f
Simplified version: not supporting IE8 and Android 4.4
@font-face {
font-family: Elena;
src: local("Elena"),
url(elena-regular.woff2) format("woff2"),
url(elena-regular.woff) format("woff");
}
Note: local avoids downloading if is in the system.
Add url(elena.otf) format("opentype"); to support Android 4.4 and earlier.