There is a name mix up with "InTab", a tool which styles your tabs - which I do not need. This tool is a CSS spy. I think the installation on Edge and Firefox is not really assuring and so decided to install it on a fresh Chrome Instance which will be only used with it. On Chrome it works really well.

It can display the website in multiple sub windows at the same time with synchronized scrolling. I can see the CSS of any element by just hovering above it. Both is really helpful.

I hope this tool will be extended and serviced.