Using HTML code, how can I make it so that my application opens with the avatar already able to start listening and responding without having to click on the initial start windows?

Hi, I want to display the avatar on a full-screen display with dimensions of 2160x3840 and embed the HTML code in my application. When I try to adjust the HTML code to fit my needs, it allows me to view the avatar in full size, but the screen gets stuck at the initial stage where the image is static and waits for buttons to be pressed. The problem is that the buttons also disappear.

My goal is for the code to be structured so that the avatar immediately appears in full screen and is ready to listen and respond to questions. Thank you!