popping text

<style>
#popping {


-webkit-animation: pop 1s ease-in-out infinite alternate;
animation: pop 1s ease-in-out infinite alternate;
-moz-animation: pop 1s ease-in-out infinite alternate;
}

@keyframes pop {
from {
transform:scale(0.95)
}

50% {
transform:scale(1)
}

to {
transform:scale(0.95)
}
}

@-webkit-keyframes pop {
from {
-webkit-transform:scale(0.95)
}

50% {
-webkit-transform:scale(1)
}

to {
-webkit-transform:scale(0.95)
}
}
</style>
<div id="popping">text</div>