Some of the best tools for development and checking web pages are often the most simple. One of my absolute favourites that I use constantly throughout the day is the ‘Inspect’ tool which is free on your browser.
If something doesn’t look quite right or if you wish to safely test some minor CSS changes, you can right click on a web page to inspect the code. This tool in Chrome and Firefox also allows you to readily check for missing files / images / scripts and most invaluable of late, files that are delivered insecurely meaning the lock isn’t appearing on SSL enabled sites.
