Actually the content is wrapped with max-width so it needs Custom CSS code.
Please provide us the exact page link where you want to reach the page edges to the browser. So that we can provide you a exact custom CSS code.
Got your email but it didn’t work and now I can’t get a response. Can you help? It seems like a basic feature and I dont know why it doesnt work, I have now tried multiple “page builders” and all have the same problem, so it must be a theme issue. Can you help me fix it?