CodePen

HTML

            
              <a href="#">Yo</a>
            
          
!

CSS

            
              		@transition:	0.3s all linear;


a:hover, a:focus {
  color: green;
	-webkit-transition: @transition;
  -moz-transition: @transition;
  transition: @transition;
	}
            
          
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JS

            
              
            
          
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