title: What is this css rule -ms-high-contrast-adjust?
body: <p>While viewing Facebook source, I came across this property. Google yeilded no results.</p>
  
  <pre><code>i.img {
      -ms-high-contrast-adjust: none;
      _overflow: hidden;
  }
  </code></pre>
  
  <p>Apparently, chrome inspector doesn't recognize it.</p>
  
  <p><a href="https://i.stack.imgur.com/iLevB.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/iLevB.png" alt="Chrome Inspector"></a></p>