Kityformula editor configure font size and spacing

github Address ：

https://github.com/fex-team/kityformula-editor

        var factory = kf.EditorFactory.create( $( "#kfEditorContainer" )[ 0 ], {
            render: {
                fontsize: 48,
                padding: [ 2, 5 ]
            },
            resource: {
                path: "./kityformula/resource/"
            }
        } );

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