I am trying to shrink the size of the navigation bar in shiny R. However, even if I change the header size (h3 to h6), the height of the navbarPage stays the same, making it look too big. I have not been successful in decreasing its size, any help would be appreciated!
This is what it looks like:

The code I have currently is below:
shinyUI(fluidPage( 
 tags$head(
  tags$style(HTML(".leaflet-container { background: #B6D0CE; }"))),
 fluidRow(h3("[Title] Dataset", align = "center", 
         style="padding:10px;")),
 fluidRow(navbarPage(theme = shinytheme("paper"), h6("Menu"),
          collapsible=TRUE, tabPanel(h6("Tab 2"))))
))
