zoom on mouse over
.grow { transition: all .2s ease-in-out; }
.grow:hover { transform: scale(1.1); }
OR
.grow{
-moz-transition:-moz-transform 0.5s ease-in;
-webkit-transition:-webkit-transform 0.5s ease-in;
-o-transition:-o-transform 0.5s ease-in;
}
.grow:hover{
-moz-transform:scale(2);
-webkit-transform:scale(2);
-o-transform:scale(2);
}