.col-md-8 img
{
-webkit-transition: all 1s ease; -moz-transition: all 1s ease; -o-transition: all 1s ease;
}

.col-md-8 img:hover 
{
-o-transition: all 0.6s;
-moz-transition: all 0.6s;
-webkit-transition: all 0.6s;
-moz-transform: scale(1.2);
-o-transform: scale(1.2);
-webkit-transform: scale(1.2);
}