in main.css, you need to edit the width for the #top-search, #top-search-submit, and #top-search-query selectors so the search form will fit the available space.
Your friends over here at WebAssist! These Dreamweaver extensions will assist you in building unlimited, custom websites.
These out-of-the-box solutions provide you proven, tested applications that can be up and running now. Build a store, a gallery, or a web-based email solution.