Adding space between options of select tag in IE browser

[imparrise]

I want to add a space in between 2 options of a select element in IE browser. My code works in Firefox and Chrome, using CSS I wrote for the select element. However, the styles are not applied in IE. This is the CSS for the select element is like:\[code\].branchDropdown { border: 1px solid #999999; width: 155px; } \[/code\]and for the option element:\[code\].branchDropdown option { cursor: pointer; margin-top: 10px; }\[/code\]