Input width with type submit less than input with type text

Question

I don\'t understand why input width with type submit less than input with type text. Could you help me with it?

HTML:

Answer 1

Demo

The box model being used is different for both the inputs, you can make the box models the same by specifying them box-sizing

css

input {
    width: 200px;
    box-sizing: border-box;
    -moz-box-sizing: border-box;
    -webkit-box-sizing: border-box;
}