Multiple selection select boxes
Using the multiple attribute.
HTML
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>Select menus: multiple selections</title>
<style>
body {
font: 100% arial, helvetica, sans-serif;
}
fieldset {
padding: 0 1em 1em 1em;
}
legend {
padding: 1em;
}
</style>
</head>
<body>
<form action="someplace.php">
<fieldset>
<legend>Favourite book</legend>
<label for="book">Name: </label>
<select name="book" id="book" size="5" multiple="multiple">
<option>The Outsider</option>
<option>The Rebel</option>
<option>The Plague</option>
<option>Things Fall Apart</option>
<option>Animal Farm</option>
<option>Nineteen Eighty-Four</option>
<option>Down and Out in Paris and London</option>
</select>
</fieldset>
</form>
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</body>
</html>