Editing Template:MongolUnicode/fonts.css

/* {{pp-template}} */
.font-mong {
	font-family: 'Menk Hawang Tig', 'Menk Qagan Tig', 'Menk Garqag Tig', 'Menk Har_a Tig', 'Menk Scnin Tig', 'Oyun Gurban Ulus Tig', 'Oyun Qagan Tig', 'Oyun Garqag Tig', 'Oyun Har_a Tig', 'Oyun Scnin Tig', 'Oyun Agula Tig', 'Mongolian Baiti', 'Noto Sans Mongolian', 'Mongolian Universal White', 'Mongol Usug', 'Mongolian White', 'MongolianScript', 'Code2000', /*Myatav Erdenechimeg's*/'Menksoft Qagan';
}

.font-mong-mnc,
.font-mong:lang(mnc-Mong),
.font-mong:lang(dta-Mong),
.font-mong:lang(sjo-Mong)  {
	font-family: 'Abkai Xanyan', 'Abkai Xanyan LA', 'Abkai Xanyan VT', 'Abkai Xanyan XX', 'Abkai Xanyan SC', 'Abkai Buleku', 'Daicing White', 'Mongolian Baiti', 'Noto Sans Mongolian', 'Mongolian Universal White';
}