Important note: Please note that current appliances include support for getting free Let's Encrypt SSL certificates. Please see the Let's Encrypt docs within the new Confconsole doc pages for full details.

Open source virtualization has been evolving dramatically over the last few years. Incumbent proprietary platforms such as VMWare still hold the throne in many areas but open source competitors are gaining ground fast on their way to ubiquity. Things are a-changing in the land of virtualization.

Right now we have three contenders to the (open source) throne battling it out for supremacy:

• Xen: backed by Citrix
• VirtualBox: backed by Oracle/Sun
• KVM: backed by RedHat

While reading CSS books and experimenting I found it helpful to take notes and put together a cheat sheet for quick reference. I figured others might find it useful so I'm sharing. I've also uploaded a simple PDF version.

9 things I didn't know about CSS that I should have known years ago but I only picked up from a couple of good CSS books.

Having dabbled in web development over the years, I've had a basic working knowledge of CSS for quite some time. In fact, I've been around long enough to remember what the web was like when we were all using font tags and transparent pixel tricks. Back when it wasn't unusual to come across a web site using the BLINK tag. Let me tell you it was ugly and it was a mess. (Now get off my lawn!).

As soon as browsers started supporting CSS I picked up just enough to save myself from committing the geek equivalent of a war crime, but I never got around to fully mastering CSS in all its glory. Advanced subjects such as floats and layout still seemed a bit mysterious. And every so often I would come across a bit of CSS code that made no sense yet rendered perfectly in every single browser I tested. Clearly my CSS skills were behind the times.