From the Add Web Objects group, you have many options for adding web-based content into your course. These options include a web window from a variety of sources, social media content, an RSS feed or HTML Extension. Starting Lectora 12 you were also given the options to set a number of properties for Web Objects including borders, margins, scrollbar, and transparency settings. This video highlighting the additional editing capabilities in still relevant in the most recent version of Lectora and Lectora Online.
For more information on Web Windows please visit this Trivantis Community article, Adding Web Windows in Lectora and Lectora Online.