.fg_category img { width: 100%; /* Need to overwrite inline dimensions */ height: auto; -webkit-filter: grayscale(100%); filter: grayscale(100%); -webkit-transition: .3s ease-in-out; transition: .3s ease-in-out; } .fg_category:not(.no_lightbox) img:hover { cursor: pointer; -webkit-filter: grayscale(0%); filter: grayscale(0%); }