<!doctype html>
<html>
<head>
<style type="text/css">
td * {
 vertical-align: top;
}
img:first-child {
 float: right;
}
</style>
</head>
<body>
<table border="1">
 <tr>
  <td><span>Header 1</span><img src="square-outline-32x32.png" alt=""></td>
  <td><img src="square-outline-32x32.png" alt="">Header 2</td>
 </tr>
 <tr>
  <td>short</td>
  <td>long long long long long</td>
 </tr>
</table>
</body>
</html>