root = Card([header, progressText, modulesList, nextLessonCallout, ratingText, continueButtons], "sunk", "column", "m", "start", "start", false)
header = CardHeader("Advanced Data Science", "Instructor: Dr. Alice Smith")
progressText = TextContent("Overall Progress: 75%", "large")
module1 = ListItem("Module 1: Foundations", "Completed")
module2 = ListItem("Module 2: Statistics", "In Progress")
module3 = ListItem("Module 3: Machine Learning", "Not Started")
modulesList = ListBlock([module1, module2, module3], "number")
nextLessonCallout = Callout("info", "Next Lesson", "Introduction to Data Visualization")
ratingText = TextContent("Average Learner Rating: 4.7/5", "default")
continueBtn = Button("Continue to Lesson", null, "primary", "normal", "medium")
continueButtons = Buttons([continueBtn], "row")