Drop Down Allignment

You have not provided any HTML markup to make more clear idea about question.Any ways as far as i guess you can add a style attribute to your select list fixing the width of all your select box on the same page.

<select id="Select1" style="width:100px">
    <option></option>
</select>

<select id="Select2" style="width:100px">
    <option></option>
</select>

<select id="Select3" style="width:100px">
    <option></option>
</select>

.
.
and so on.
Hope this will solve your problem.