The built in console will direct you to errors with your code.
On-the-Fly Style Changes
For quick style changes, you don't even need to use a text editor. You can inspect the particular element on the page to determine which styles are being applied.
Easy to Use
Browser Dev tools are clean and easy to navigate.
The Browser DevTools are tools for creating and debugging websites built right into the browser. They provide developers with deeper access to their web applications and browser. The tool helps you easily cope with everything from testing your viewport on your mobile device to editing HTML / CSS on the fly, even using it to measure the performance of individual assets of your site.