@font-face {
    font-family: 'Batang';
    src: url(font_path("Batang.woff2")) format("woff2"),
    url(font_path("Batang.woff")) format("woff");
    font-weight: normal;
    font-style: normal;
    font-display: optional;
    unicode-range: U+AC00-D7A3, U+1100-11FF, U+3130-318F, U+A960-A97F, U+D7B0-D7FF;
}


@font-face {
    font-family: 'Batang';
    src: url(font_path("Batang.woff2")) format("woff2"),
    url(font_path("Batang.woff")) format("woff");
    font-weight: normal;
    font-style: normal;
    font-display: auto;
    unicode-range: U+AC00-D7A3, U+1100-11FF, U+3130-318F, U+A960-A97F, U+D7B0-D7FF;
}


Change font-display for Batangfrom optional to auto
Change font-display for Batangfrom optional to auto
