A browser-based web authoring tool that enables locally editing and rendering web pages comprising style sheets. One illustrative embodiment is directed to a browser-based web authoring tool that may edit a style sheet to convert it to an inline style block. The inline style block is then inserted into a web page, replacing a reference to the style sheet. In this way, as the page is edited the web page may be rendered via the browser without repeatedly transferring a style sheet from the web server.