checkbox raido 控件与后面的文字居中对齐

如题：使checkbox 和radio控件与后面的文字居中对齐

checkbox:

<input type='checkbox' id="fieldTime_shiFoubt" name='shiFoubt'  style='vertical-align:middle;'><span style='vertical-align:middle;'>必填</span>

radio:

<input type='radio' name='lang' value='1' checked='checked' style='vertical-align:middle; margin-top:-2px; margin-bottom:1px; '></input><span style='font-size:12px; '>aaa</span>