Rotating text in a dashboard

[antostain]

I would like to write some text rotated by -90 degrees in a Looker dashboard (see the picture below). Does anyone know if this is possible in any way (e.g., in a markdown cell or in a text field)? In a markdown cell I tried to define the rotated text class in CSS and to write the text in html but the markdown cell does not recognise CSS code.
Alternatively, is it possible to write the y-axis name of a plot on two lines? Thank you for your help!