Width of input type=text element

Question

How come when I do this:

<input type="text" style="width: 10px; padding: 2px"/>
<div style="width: 10px; border: solid 1px black; padding: 2px">&nbsp;</div>

the input ends up 2 px wider than the div in both IE6 and FF3? What am I missing?

EDIT: As many people have said, the border is the issue. If I set border: 0px on the input, it will have the same width as the div with a 0 px border (verified by wrapping it inside a bordered SPAN).

However, when I measure the elements in paint, the div has a 14 px interior, just as expected (10+2+2). The input, however, has a 16 px interior, and then a border outside of that. Why is this? Probably not a bug since it happens in both IE6 and FF3, but I dont understand it.

Answer 1

I believe that is just how the browser renders their standard input. If you set a border on the input:

<input type="text" style="width: 10px; padding: 2px; border: 1px solid black"/>
<div style="width: 10px; border: solid 1px black; padding: 2px"> </div>

Then both are the same width, at least in FF.

Answer 2

The visible width of an element is width + padding + border + outline, so it seems that you are forgetting about the border on the input element. That is, to say, that the default border width for an input element on most (some?) browsers is actually calculated as 2px, not one. Hence your input is appearing as 2px wider. Try explicitly setting the border-width on the input, or making your div wider.