Others may just take tedious effort on your part to fix. Good design calls for a descriptive label for all links. Abolish those silly Under Construction warnings. Users would be more concerned if a web page weren't under construction. Place the warning one level back, on the page with the link, so as not to waste your visitor's time accessing a useless page.
Good design calls for a plain white background.
Use other elements such as well-crafted images to add a touch of class to your site. HTML is designed to encapsulate the structure of a document, leaving the presentation to the browser. If you tune a document to a particular browser, your site will almost certainly be a mess to other browsers, particularly if it has customized fonts and font-sizes as defaults. Microsoft FrontPage is notorious for creating pages that are specific to Microsoft's Internet Explorer. Your page may be accessed from links within your site as well as from other sites different from what you might anticipate.