It is possible to selectively modify all elements in a skin, like the visibility of sections of an HTML page, or the color of the headings in the documents for example. This can be done by accessing the CSS files located in your theme directory under Appearance > Storefront Themes. Most CSS is usually located in the CSS folder but you can add styles with the CMS as well. Use inspector tools built into the browser to locate locations and line numbers of properties you wish to change. Make sure you have completed PrintNow training with introduction to Site Skinning.