XF 2.1 What's the width of my forum?

[Ayanle]

Hi, I'm new to this stuff. I just want to know where I can look in the admin cp to know the exact width because I want a banner for my website that covers most if not all the width.

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[Paul B]

 

[Ayanle]

View attachment 204117

So length is 1200 and width is 1152? Thanks alot, btw how did you do that?

 

[Paul B]

Width is 1200.

I used the browser inspector (F12).