Cera un errore nel codice prova così
codice:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
	<head>
		<title>Documento senza titolo</title>
		<meta content="text/html; charset=utf-8" http-equiv="Content-Type" />
<style type="text/css">
.div-1 {
	border: none;
	height: 300px;
	margin-left: auto;
	margin-right: auto;
	text-align: left;
	width: 600px;
}

.div-1-1 {
	border: none;
	clear: both;
	float: left;
	height: 300px;
	padding: 0px;
	text-align: left;
	width: 300px;
}

.div-1-2 {
	border: none;
	float: left;
	height: 300px;
	padding: 0px;
	text-align: left;
	width: 300px;
}
.div-1, .div-1-2, .div-1-1 {
	overflow: hidden;
}
</style>
	</head>
	<body>
		<div class="div-1">
			<div align="left" class="div-1-1">Qui immagine</div>
			<div align="left" class="div-1-2">Qui il testo</div>
			<div style="clear: both;"></div>
		</div>
	</body>
</html>
Provato e funziona