Hello friends, I bought this template, I have three questions ??

I am using the option image image background

1. How to make the ME.png and small-me.png image static and not disappear? (Disappears in Safari, iPhone and Android).

2. How to delete the image and animation LOADING, which is first when loading the page?

3. Can I insert a logo in the navigation bar?
please answer
vigiasystem@gmail.com