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    @font-face {
        font-family: 'Xero\u0026#039;s Theorem';
        font-style: normal;
        font-weight: 400;
        src: local('Xero's-Theorem'),
            url(https://myfonts.ru/fonts/2/1/6/5/5/Xeros_Theorem.ttf) format('truetype');
    }