<style>
@keyframes scaleout {
    0% {
    }
    to {
    }
}
.test {
    text-align: center;
    border: 2px solid green;
    height:100px;
}
.test > span {
    top: 40px;
    position: absolute;
    width: 64px;
    height: 64px;
    background-color: #ff4500;
    border-radius: 100%;
    animation:scaleout 1.5s infinite ease-in-out
}
</style>
<body>
<div class=test><span></span>centered</div>
</body>