When we talk about your site's style sheet(s) we're referring to the coding that defines the design of your website, like colors, fonts, and layout. This coding is called CSS, for Cascading Style Sheets. Each website we make is custom designed and built for you, we don't use templates because we want each site to be tailored to the client and their unique set of needs. Here's a little more info on style sheets and design.
If you'd like to make changes to your site's design, please contact us to discuss your options.