You may need to do what’s called a hard refresh, which you can do by holding down the shift key and pressing the reload button. The need to hard refresh happens because when you visit any website, your computer downloads the CSS file (the stylesheet file that controls the site’s styles). When you return to that site, it’s actually your machine that loads your local file, rather than looking to the new file on the server. (Your browser is trying to be helpful and save time.) Once we go into production mode, we have a tool that will automatically cache bust every time we push updates to the stylesheet. This isn’t turned on until we go live — but we also won’t be pushing code on a regular basis, so it’s overall less of an issue.

Check out the following for more info: