web browser developer tools

I have a question. Not sure im even allowed to post it here but in new and i guess I'll find out. I was on my email and i for some reason felt as tho is go into the dev tools on my web brower even tho i have no idea how to use them. I began looking around and then came the the network part of it where i was seeing some website pop up i then decided to type one in to the web browser on new tap and when i did it cam back just black. And the site at the top was long like the one i typed init was only ssl.gstatic.com. the full URL i typed looked like this. https://ssl.gstatic.com/ui/v1/icons/mail/images/cleardot.gif?zx=wgd121l02lwv. There are lots more of these kind of URLs coming in.