title: Browser Caching of CSS files
body: <p>Quick question regarding CSS and the browser. I tried searching SO and found some similar posts, but nothing definitive.</p>
  
  <p>I use one or two CSS files in my web projects. These are referenced in the HEAD of my web pages. Once I hit one of my pages, does the CSS get cached so that it's not re-downloaded with each request? I hope so. Do IE, Firefox and Safari handle this differently? If the browser is closed, is the CSS refreshed on the first visit when a new browser instance is opened?</p>