Installing non-standard fonts [closed]

If your font is free convert it http://onlinefontconverter.com.

open type can be used in website try appending format("opentype"). I will strongly suggest converting this from from given link, if your font is free and open source.

@font-face { 
    font-family: UtopiaStd; src: url('/wp-content/themes/opti-child/UtopiaStd-Regular.otf') format("opentype"); 
}

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