Now I have use the flex-horseshoe-card. It’s not finished yet; there will also be an arrow indicating whether the tariff is low or high, and whether the inverter is on or off, or starting up.
Instead of kW, I want to display the voltage (like I did before on my Rpi).
With this, You can set i.e border " data-border-outer-width", and alot more, beside “touch-it” with i.e card-mod
But honestly, try to look at your Gauge-Card-Pro, in Your Browser-dev-Tools “inspect”, i wouldn’t be surpriced if you could use same/similar " data-border-outer-width" either direct in Card-Config, or through Card-mod