.calendar{
    width:75px;
    height:75px;
    margin-top:-550px;
}
.calendar:hover{
    width:75px;
    height:75px;
    margin-top:-550px;
    -webkit-transform:scale(1.25);
    -moz-transform:scale(1.25);
    -ms-transform:scale(1.25);
    -o-transform:scale(1.25);
    transform:scale(1.25);
}