root = Card([header, revenueCard, comparisonCard])
header = CardHeader("Morning Check-in", "Mid-morning overview")
revenueCard = Card([revenueTitle, revenueValue, revenueTag], "sunk")
revenueTitle = Heading("Revenue so far today", "h3")
revenueValue = TextContent("$1,240", "large-heavy")
revenueTag = Tag("On track", null, null, "success")
comparisonCard = Card([comparisonTitle, comparisonChart], "sunk")
comparisonTitle = Heading("vs. same time yesterday", "h3")
comparisonChart = BarChart(["Yesterday", "Today"], [comparisonSeries])
comparisonSeries = Series("Revenue", [1180, 1240])