Making a q-card to fill all the available space

[averri]

Using the Flex CSS classes, how to make a q-card to fill all the available space in the UI (both vertical and horizontal spaces)?

[Frondor]

If your card is inside a .container, .row, .column or any flex element, you can use <q-card class="no-margin full-height">, otherwise, you can use window-height instead, which may be too high for sure.
You can also try .fit class as stated here http://quasar-framework.org/components/other-helper-classes.html#Size-Related