jqwidgets-framework/demos/React-TSX/editor/importstyles/editor.css

jQWidgets is an advanced Angular, Vue, Blazor, React, Web Components, jquery, ASP .NET MVC, Custom Elements and HTML5 UI framework.

html, body {
    font-family: HelveticaNeue-Light, Helvetica Neue Light, Helvetica Neue, Helvetica !important;
    font-size: 22px !important;
}