<!DOCTYPE html>
<html>
<head>
<style type='text/css'>
#myDiv {
height: 50px;
position: absolute;
width: 300px;
background-color: #DDD;
}
#myButton {
cursor: pointer;
margin-right: 10px;
position: absolute;
top: 0;
right: 0;
}
</style>
</head>
<body>
<div id="myDiv">
<p>text</p>
<span id="myButton">B</span>
</div>
</body>
</html>