Well, I curious as to the nature of Radio groups and dropdown lists in HTML. I have found that radio buttons are difficult to style but I would like to style my elements for required fields. I asked a previous question regarding styling radio buttons and giving a border color like you can do with text boxes, example:
<input type="text" style="border-color:#FF0000">
<input type="radio" style="border-color:#FF0000">
applying style to a radio button to change the border color does not work.
My Question is there any reason why I shouldnt use a drop down list insead of a radio group?
Drop down lists require more work (on the part of the user) to find out what options are available … and are as twiddly to style as radio buttons anyway.
You might try setting the border colour on the fieldset containing the radio group instead. Remember to also use some other method for indicating required fields though.