<style>
.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%;
</style>
<body>
<div class=test><span></span>centered</div>
</body>