Escala de grises utilizando CSS3

img.grayscale { filter: url("data:image/svg+xml;utf8,<svg xmlns=\'http://www.w3.org/2000/svg\'><filter id=\'grayscale\'><feColorMatrix type=\'matrix\' values=\'0.3333 0.3333 0.3333 0 0 0.3333 0.3333 0.3333 0 0 0.3333 0.3333 0.3333 0 0 0 0 0 1 0\'/></filter></svg>#grayscale"); /* Firefox 10+, Firefox on Android */ filter: gray; /* IE6-9 */ -webkit-filter: grayscale(100%); /* Chrome 19+, Safari 6+, Safari 6+ iOS */ } img.grayscale.disabled { filter: none; -webkit-filter: grayscale(0%); } img.grayscale:hover{ filter: none; -webkit-filter: grayscale(0%); }

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