title: Are there any command line validation tools for HTML and CSS?
body: <p>Is anyone aware of command line tools that can validate CSS and/or HTML?</p>
  
  <p>The W3C offers its validators for local installation, with directions to use from the command line, but the installation process is a nightmare for anyone who isn't a seasoned Java developer.</p>
  
  <p>I've searched with Google, but can't find anything.</p>
  
  <p>Ideally I'd like to use a tool (or tools) that I can point at my CSS, and have it report back on any errors. I want it to be local to increase the speed of my debugging cycles.</p>
  
  <p>Ideally, the tools will understand HTML5 and CSS3.</p>