Staci si nechat zvalidovat (se selecem uyavrenym do fieldsetu):
<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
<head>
<title>I AM YOUR DOCUMENT TITLE REPLACE ME</title>
<meta http-equiv="Content-Type" content="application/xhtml+xml; charset=UTF-8" />
<meta http-equiv="Content-Style-Type" content="text/css" />
</head>
<body>
<div>
<form action="./neco.php" method="post">
<fieldset>
<select name="neco" id="kolik">
<option value="0">vše</option>
<option value="1">lev</option>
<option value="2">medvěd</option>
<option value="3">tygr</option>
</select>
</fieldset>
</form>
</div>
</body>
</html>
a bez fieldsetu:
<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
<head>
<title>I AM YOUR DOCUMENT TITLE REPLACE ME</title>
<meta http-equiv="Content-Type" content="application/xhtml+xml; charset=UTF-8" />
<meta http-equiv="Content-Style-Type" content="text/css" />
</head>
<body>
<div>
<form action="./neco.php" method="post">
<select name="neco" id="kolik">
<option value="0">vše</option>
<option value="1">lev</option>
<option value="2">medvěd</option>
<option value="3">tygr</option>
</select>
</form>
</div>
</body>
</html>