Align Heading vertically centered in surrounding box

Hi fellow sparklers,

I’ m struggling with a positioning problem of a heading that is surrounded by a box.
The box is set to 100vh height, so it always stretches to the browser height.
I’ made a small graphic to explain further.
I want an object that is located in this box to be vertically centered.
I have tried several CSS styling concepts, but none of them worked due to the structure sparkle generates DIV objects.

Is there anybody with a tip for me?

Sparkle does not support 100vh, so if you added that via code you need to also add code to center the content.

Hello Duncan,

thank you for the reply. Yes,I’ve added the 100vh via an external stylesheet.
I am just looking for some hints

Is there no one with a hint?