Center form on HTML/PHP Page

> This is a quick and easy one. I need my form centered and there are a few extra characters on the top of my page that I need to get rid of. > > I've attached a screenshot of the page so you can have a look at it. > > The extra characters are basically ? at the top of the page. > > I need this one done right now. If you're ready to start immediately message me. This can be finished in 5 - 10 minutes. > > This needs to be done now. I need this within the next 2 hours. >