9gag-lilik/style.css

#container.night{
	 background-color: white;
	 -webkit-transition: all 0.3s ease-in-out;  /* Android 2.1+, Chrome 1-25, iOS 3.2-6.1, Safari 3.2-6  */
	 -webkit-filter: invert(100%);
}
#container.night img, #container.night video{
	-webkit-filter: invert(100%);
}