Losing the navigation when viewing a dashboard in a browser

Hello, I’ve got a grid card showing a number of gauges:

I have an automation which uses the alexa media player integration which calls "open my page and show energy monitor’
My page is an alexa skill which allows you to command alexa to show specific webpages (my example is the URL of the dashboard which I want to see on my Echo Show.

However there does not appear to be a way of removing the silk address bar so is there any way I can lose the header row where the 3 bars and the 3 dots are from the specific dashboard so my content is not cut off. I tried going to 5 columns with the grid card but then I have to put my glasses on to be able to read the display which isn’t ideal.