What is the best way to set the exact pixel width for a sidebarPanel?

Is there a way to define the precise width of a sidebarPanel in pixels instead of using the width argument? I have found that the width option is not precise enough for my needs.

library(shiny)

ui <- fluidPage(
  sidebarLayout(
    sidebarPanel(width = 5), # This is not accurate enough!
    mainPanel()))

server <- function(input, output, session) {}

shinyApp(ui, server)

Answer №1

To make the width more flexible, consider setting it as a percentage value such as 100% to represent full width rather than a fixed px value.

library(shiny)

ui <- fluidPage(
  sidebarLayout(
    div(style="width: 70%;",sidebarPanel(width = 5)), # This is not precise enough!
    mainPanel()))

server <- function(input, output, session) {}

shinyApp(ui, server)

Answer №2

After researching on how to customize the background of a sidebar panel in R Shiny, I came across a helpful solution from this thread:

library(shiny)

ui <- fluidPage(
  tags$head(tags$style(HTML('#sidebar {width: 100px;}'))),
  sidebarLayout(
    sidebarPanel(id = "sidebar"),
    mainPanel()))

server <- function(input, output, session) {}

shinyApp(ui, server)

This approach specifically targets the sidebar panel without impacting other components like wellPanels.

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