@-webkit-keyframes pisk { 
0% {opacity: 1;} 
50% {opacity: 0;} 
100% {opacity: 1;} 
} 
@-moz-keyframes pisk { 
0% {opacity: 1;} 
50% {opacity: 0;} 
100% {opacity: 1;} 
} 
@-o-keyframes pisk { 
0% {opacity: 1;} 
50% {opacity: 0;} 
100% {opacity: 1;} 
} 
@-ms-keyframes pisk { 
0% {opacity: 1;} 
50% {opacity: 0;} 
100% {opacity: 1;} 
} 
#piskk {margin:1px; border:1px solid transparent; -webkit-transition: all .4s ease-in-out; -moz-transition: all .4s ease-in-out; -o-transition: all .4s ease-in-out; -ms-transition: all .4s ease-in-out;}
#piskk:hover {-webkit-animation: pisk .8s alternate infinite linear; -moz-animation: pisk .8s alternate infinite linear; -o-animation: pisk .8s alternate infinite linear; -ms-animation: pisk .8s alternate infinite linear;}