<html>
<head>
<style>
select
{
width:100px;
}
</style>
</head>
<body >
<div style="width:100px; overflow:hidden">
<select value='option1' text='option1'>option 1</select>
<select>option 2</select>
<select>option 3 option 3 option 3</select>
<select>option 3 option 3 option 3</select>
<select>option 3 option 3 option 3</select>
</div>
</body></html>
Use this style block