vertical-table-1-ref.html

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<!DOCTYPE html>

<html>

<head>

<meta charset=utf-8>

<style>

#r1c1, #r1c2, #r1c3, #r1c4 { width: 50px; }

#r2c1, #r2c2, #r2c3, #r2c4 { width: 100px; }

#r1c1, #r2c1 { height: 20px; }

#r1c2, #r2c2 { height: 30px; }

#r1c3, #r2c3 { height: 40px; }

#r1c4, #r2c4 { height: 50px; }

#r1c1 { background: #003; }

#r1c2 { background: #007; }

#r1c3 { background: #00b; }

#r1c4 { background: #00f; }

#r2c1 { background: #030; }

#r2c2 { background: #070; }

#r2c3 { background: #0b0; }

#r2c4 { background: #0f0; }

</style>

</head>

<body>

<table>

<tr>

  <td id="r1c1"></td>

  <td id="r2c1"></td>

</tr>

<tr>

  <td id="r1c2"></td>

  <td id="r2c2"></td>

</tr>

<tr>

  <td id="r1c3"></td>

  <td id="r2c3"></td>

</tr>

<tr>

  <td id="r1c4"></td>

  <td id="r2c4"></td>

</tr>

</table>

</body>

</html>