import toga
from toga.constants import MONOSPACE, SMALL_CAPS
from toga.style import Pack


def build(app):
    box = toga.Box()
    label = toga.Label('Hello world', style=Pack(font_variant=SMALL_CAPS)) # Replacing with  font_family=monospace  or font_size=20 works
    label.style.padding = 100
    label.style.flex = 1
    box.add(label)

    return box


def main():
    return toga.App('First App', 'org.pybee.helloworld', startup=build)


if __name__ == '__main__':
    main().main_loop()