<!DOCTYPE html>
<html>
<head>
<title>Title of the document</title>
<style>
#circle {
background: #cfcfcf;
width: 128px;
height: 128px;
border-radius: 64px;
border: 2px solid #000;
}
#circle div {
position: relative;
left: 19px;
top: 19px;
width: 90px;
height: 90px;
color: #000;
text-align: center;
}
</style>
</head>
<body>
<div id="circle">
<div>Example of a circular div</div>
</div>
</body>
</html>