Forms are huge. How do I re-size them?

When I create even a simple form (First Name, Last Name, Email), the form size is huge. Takes up half the page. How do I shrink it? I tried stuffing it into a small box, but it just truncated the text fields.

Hi Bob. Can you provide a URL here please, so we can see the form, and also let us know what you mean by huge? Which dimensions to you want to tighten up or shrink? Thank you.