not a lot of information here –
what contact form (download link) ?
link to the site with the form ?
fieldset needs probably be edited in the code of the contact form –
style needs to be editeed either in the css file that came with the form code, or by adding corresponding styles to style.css of the theme used.
working for a customer, you probably know enough css/html/php to do this.
Thread Starter
kris42
(@kris42)
look into the html code from the browser, to identify the css ids and classes that belong to the individual parts of the forms.
(firefox web developer add-on or firebug are great tools to help with that)
then try to change these styles to move the form elements the way you want.
i am aware that optimizing the placement can be tricky and might need a few trials.
however, this is not something, that someone from the outside can help much with, particular without knowing the exact requirements.
good luck 😉