img{opacity: 0.6; -webkit-transition: all 0.3s linear 0s; -moz-transition: all 0.3s linear 0s; -o-transition: all 0.3s linear 0s; transition: all 0.3s linear 0s;} img:hover{opacity: 1.0; -webkit-transition: all 0.3s linear 0s; -moz-transition: all 0.3s linear 0s; -o-transition: all 0.3s linear 0s; transition: all 0.3s linear 0s;}