<style type="text/css" media="screen">
	form div {
		margin: 0 0 1em;
		padding: 0 0 0 8em;
	}

	/* clearfix */
	form div:after {
		content: ".";
		display: block;
		height: 0;
		clear: both;
		visibility: hidden;
	}

	* html form div {
		zoom: 1;
	}

	form label {
		margin: 0 0 0 -8em;
		float: left;
		width: 7.5em;
	}
</style>

<form action="#" method="post">
    <div>
        <label>Username:</label>
        <input type="text" name="username" value="" />
    </div>
    <div>
        <label>Password:</label>
        <input type="password" name="password" value="" />
    </div>
</form>