Changing the size of a card in lovelace

I am setting up an iPad as a screen and want the main screen to be this clock;

But I want it to be full screen (make it larger) so it is similar to

The card configuration is

type: 'custom:htc-weather-card'
entity: weather.home
am_pm: true
renderDetails: true
renderForecast: true
renderClock: true
theme:
  name: default
  weather_icon_set: default

I assume it is not the .js code but a card configuration?

hello .i htink this is the panel mode.(one card full screen)
you can active it throught the web ui, at the same place you edit badge and page name.

Thank You - it is in panel mode, but does not fill the screen.

oh yes , sorry
well i found this:

and