how to put an image in a dropdown html code example

Example: how to put an image in a dropdown html

Select a Country
USA
India



CSS

select.icon-menu option {
background-repeat:no-repeat;
background-position:bottom left;
padding-left:30px;
}
select#countries option[value="US"] {
background-image:url(flags/usa.png);
}
select#countries option[value="IN"] {
background-image:url(flags/india.png);
}