title: Lines and Design For Retina
body: <p>I have a quick question, as all of my searches have turned up app design and not web design answers.</p>
  
  <p>When designing for Retina, what should I put in my CSS to make a 1px horizontal line appear as just that - 1px? I don't want it doubling up, but I also can't make it 0.5px apparently.</p>
  
  <p>Or does it render pixel-specified borders as it should?</p>
  
  <p>Everything I've looked into so far just makes it so much more confusing.</p>