How to align input forms in HTML
Another example, this uses CSS, I simply put the form in a div with the container class. And specified that input elements contained within are to be 100% of the container width and not have any elements on either side.
.container {
width: 500px;
clear: both;
}
.container input {
width: 100%;
clear: both;
}
<html>
<head>
<title>Example form</title>
</head>
<body>
<div class="container">
<form>
<label>First Name</label>
<input type="text" name="first"><br />
<label>Last Name</label>
<input type="text" name="last"><br />
<label>Email</label>
<input type="text" name="email"><br />
</form>
</div>
</body>
</html>
A simple solution for you if you're new to HTML, is just to use a table to line everything up.
<form>
<table>
<tr>
<td align="right">First Name:</td>
<td align="left"><input type="text" name="first" /></td>
</tr>
<tr>
<td align="right">Last Name:</td>
<td align="left"><input type="text" name="last" /></td>
</tr>
<tr>
<td align="right">Email:</td>
<td align="left"><input type="text" name="email" /></td>
</tr>
</table>
</form>
The accepted answer (setting an explicit width in pixels) makes it hard to make changes, and breaks when your users use a different font size. Using CSS tables, on the other hand, works great:
form { display: table; }
p { display: table-row; }
label { display: table-cell; }
input { display: table-cell; }
<form>
<p>
<label for="a">Short label:</label>
<input id="a" type="text">
</p>
<p>
<label for="b">Very very very long label:</label>
<input id="b" type="text">
</p>
</form>
Here's a JSFiddle: http://jsfiddle.net/DaS39/1/
And if you need the labels right-aligned, just add text-align: right
to the labels: http://jsfiddle.net/DaS39/
EDIT: One more quick note: CSS tables also let you play with columns: for example, if you want to make the input fields take as much space as possible, you can add the following in your form
<div style="display: table-column;"></div>
<div style="display: table-column; width:100%;"></div>
you may want to add white-space: nowrap
to the labels
in that case.
I find it far easier to change the display of the labels to inline-block and set a width
label {
display: inline-block;
width:100px;
text-align: right;
}