Cascading Style Sheets (CSS) is a method of defining styles for formatting HTML mark-up. 
CSS vs Font Tags and Tables
CSS styles are defined in a separate file and can be used as selectors throughout the pages of the website thus creating

smaller file sizes for faster loading
greater control over design
design consistency
easier updating and site maintenance

With table layouts [...]

So you’ve got a great website you’re proud of but is it generating business for you the way you expected it would? When your new company website goes live  – you email your customers and anyone you know who may be interested in visiting your new website to tell them about it. You add a link [...]