Making AI Agent Full Screen when embedded to Website

Is there any way to make this AI Agent take up the full screen rather than just being a small circle in the corner or taking up a small portion of the right side of the screen?

We have a functioning, customized avatar but we want it to position it in the middle of the screen

We've tried html/css containers but those don't work, does any one have any solutions for this?

On one of the previous answered questions we saw there was an image of a screen where you could change the position of the embed or even make it full screen, however we can't access this screen, is it still available?