title: Viewport height / width returning decimal value?
body: <p>Viewport height usually returns an integer value; however I am now noticing it returning a value with 2 decimal points.</p>
  
  <p>Why / how do viewport units get rounded?</p>
  
  <p>(Additionally, I am not resizing my browser window -- yet 100vh returns 616px sometimes, other times 616.36px)</p>