shiny fluidrow column white space - r

Question

I have a top banner that I want to split into two separate sections representing two different inputs. To do this, I've created a fluidRow and with two columns, one for each input. However, as it is now there is a little bit of white space between the columns, despite putting offset = 0. Is there any way to remove this white space so that the columns are immediately next to one another?
colors = c("green","blue","red")
library(shiny)
ui <- fluidPage(
tabsetPanel(
tabPanel("Info",
fluidRow(
column(width = 6, offset = 0,
div(style = "height:50px;width:100%;background-color: #999999;border-style: solid;border-color: #000000",
tags$h3("Section 1")
)
),
column(width = 6, offset = 0,
div(style = "height:50px;width:100%;background-color: #999999;border-style: solid;border-color: #000000",
tags$h3("Section 2")
)
)
),
fluidRow(
column(width = 6, offset = 0,
div(style = "height:50px;width:100%;background-color: #999999;border-style: solid;border-color: #000000",
selectInput(inputId = "color",label = "color:",
choices = colors,
selected = colors[2],
multiple = FALSE)
)
),
column(width = 6, offset = 0,
div(style = "height:50px;width:100%;background-color: #999999;border-style: solid;border-color: #000000",
selectInput(inputId = "points",label = "Number of Points:",
choices = c("30","60","90"),
selected = "10",
multiple = FALSE) )
)
),
br(),
br(),
fluidRow(
actionButton(inputId = "go",
label = "Update"
)
),
fluidRow(
plotOutput("plot", width = "100%")
)
)
)
)
server <- function(input, output,session) {
data = eventReactive(input$go, {
var1 = rnorm(isolate(as.numeric(input$points)),5)
cat1 = c(rep("red",length(var1)/3),rep("blue",length(var1)/3),rep("green",length(var1)/3))
data = cbind.data.frame(var1,cat1)
plotdata = data[which(data$cat1 ==isolate(input$color)),]
}
)
output$plot = renderPlot({
plotdata = data()
plotcol = isolate(input$color)
plot(plotdata$var1, col = plotcol)
})
}
shinyApp(ui = ui,server = server)

Answer 1

The white space is the padding of the column div. To remove that, use
column(width = 6, offset = 0, style='padding:0px;', ...)