I can't reproduce example of Stepper from Material-UI properly. When I copy the source code from Vertical Linear Stepper within Material-UI the heigth of the Stepper takes all available heigth but not 400px as specified in the style of the element. See please a screenshot. Heigth stretches to body value
I thoroughly compared generated styles each by each with the example but failed figure out the difference.
Where should I investigate further or what I.m doing wrong?
Thank you in advance