CodePen

HTML

            
              <div class="ngg-gallery-thumbnail" >
			<a href="jaeeunlee.com/work/what-goes-around-comes-around" title=" "  >
				
				<img title="what goes around comes around" alt="what goes around comes around" src="http://jaeeunlee.com/wp-content/gallery/work-thumbnails_1/thumbs/thumbs_what-goes-around.png" width="150" height="150" />
			</a>
			
	</div>
            
          
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↑ Insert the most common viewport meta tag

CSS

            
              .ngg-gallery-thumbnail {
    width:150px;
    height:150px;
	background:black !important;
}
            
          
!
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Must be a valid URL.
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JS

            
              $(".ngg-gallery-thumbnail img") .hover(
	function(){
		$("this").fadeTo(500, 0.5);
	},
	function(){
		$("this").fadeTo(500, 1);
		}
);
            
          
!
Must be a valid URL.
+ add another resource
via JS Hint
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