---HTML FILE--
<form ...>
<p>
<label for="id1">Label 1</label>
<input id="id1" ... />
</p>
<p>
<label for="id2">Label 2</label>
<input id="id2" ... />
</p>
</form>
--CSS FILE--
p {
position: relative;
}
label {
position: absolute;
width: 150px;
left: 0;
top: Xpx /* x to align nicely with the baseline of the text in the input */
}
input {
margin-left: 160px;
}