.docicon{text-align:center;margin-top:40px;margin-bottom:50px}.docicon a{color:#333}.docicon .img{filter:grayscale(100%);-webkit-filter:grayscale(100%)}.docicon .img:hover{filter:none}.docicon img:hover{filter:hue-rotate(-45deg) brightness(0.7);-webkit-filter:grayscale(-45deg) brightness(0.7)}