Build a tribute page! help

can you guys tell me why the image is not visible? and also why is all blue and all connected?

The actual url of the image is

<img src='//'>

and not

thanks for the help!
Do you know why most of my code are blue?

many thanks

Most likely you have an a href tag that you didn’t close.

<a href="somelink">  and you forgot to close it with ---> </a>