Source code
Revision control
Copy as Markdown
Other Tools
<html>
<head>
<style>
th, td { background: #ddd; }
table { border-collapse: collapse; }
</style>
</head>
<body>
<table border="1">
<tr><th>x</th><th colspan="2" class="a1 a2">A</th></tr>
<tr><th>x</th><td class="a1">a1</td><td class="a2">a2</td></tr>
</table>
</body>
</html>