How to make the checkbox smaller than the default size?

Question

How can I get a smaller flag, for use in tightly populated lists, etc., using standard HTML + CSS?

Answer 1

Resizing the checkbox is not a reliable cross browser. Check this site for investigation:

Styled Checkboxes

Answer 2

<style type="text/css">
    input[type='checkbox'] {
        width:10px;
        height:10px;
    }
</style>