How to add more Whitespace to the Main Panel in Shiny Dashboard?

Question

I have a couple of charts in my Main Panel in my Shiny Dashboard, and I was wondering how to extend the whitespace at the bottom of the main panel? How should I modify my ui.R to do this?

dashboardBody(
    tabItems(
      tabItem("dashboard",

              mainPanel(
                showOutput("plot3", "Nvd3"),
                showOutput("plot4", "Nvd3")

         )),

Update: Adding HTML("<br><br><br>") in the Main Panel only created a wider dark panel:

Answer 1

Can you try to wrap you showOutput with a div wrap?

tags$div(
  style="margin-bottom:50px;",
  showOutput("plot4", "Nvd3")
)

Answer 2

I had the same problem. Putting everything in a fluidRow() fixed it for me...