title: How to resolve the CSS warning in Firefox 71 version
body: <p>I got the CSS warning in console window when load the my page in Firefox's latest version (71.0). Please find the list of warning on below.</p>
  
  <pre><code>Expected ‘none’, URL, or filter function but found ‘alpha(’.  Error in parsing value for ‘filter’.  Declaration dropped. material.css:3943:11
  Unknown pseudo-class or pseudo-element ‘-ms-clear’.  Ruleset ignored due to bad selector. material.css:3958:15
  Unknown pseudo-class or pseudo-element ‘-ms-input-placeholder’.  Ruleset ignored due to bad selector. material.css:3988:15
  Unknown pseudo-class or pseudo-element ‘-ms-input-placeholder’.  Ruleset ignored due to bad selector.
  
  Unknown pseudo-class or pseudo-element ‘-webkit-autofill’.  Ruleset ignored due to bad selector. material.css:5611:40
  Unknown pseudo-class or pseudo-element ‘-ms-textarea-placeholder’.  Ruleset ignored due to bad selector.
  
  Keyframe rule ignored due to bad selector. material.css:540:13
  Error in parsing value for ‘margin-right’.  Declaration dropped.
  </code></pre>
  
  <p><a href="https://i.stack.imgur.com/lcqyS.png" rel="noreferrer"><img src="https://i.stack.imgur.com/lcqyS.png" alt="enter image description here"></a></p>
  
  <p>Can you please provide a solution to resolve the warning from the Firefox browser.</p>
  
  <p>Thanks 
  Gobala</p>