#a1 {
    text-decoration: none;
    display: block;

    float: left;

  
    -webkit-transform: scale(1,1);
    -webkit-transition-timing-function: ease-out;
    -webkit-transition-duration: 250ms;
    -moz-transform: scale(1,1);
    -moz-transition-timing-function: ease-out;
    -moz-transition-duration: 300ms;
}
#a1:hover {

    -webkit-transform: scale(1.07,1.10);
    -webkit-transition-timing-function: ease-out;
    -webkit-transition-duration: 250ms;
    -moz-transform: scale(1.07,1.10);
    -moz-transition-timing-function: ease-out;
    -moz-transition-duration: 250ms;
    position: relative;
    z-index: 50;
}