如何在Shiny和Shinydashboard中自定义HTML文本和逐字输出之间的空间

这是我上一个问题的后续问题( How to change the width and height of verbatimTextOutput in Shiny and Shinydashboard ). 我想创造一个 verbatimTextOutput 看起来和 textInput . 下面是一个例子。

strong 文本输入 . 有没有办法增加这行和erBaTimeTextOutput之间的空间 , making the appearance as the same as the 文本输入`?

代码

# Load the packages
library(shiny)
library(shinydashboard)

# User Interface
ui <- dashboardPage(
  header = dashboardHeader(title = ""),
  sidebar = dashboardSidebar(
    sidebarMenu(
      menuItem(
        text = "Example",
        tabName = "tab1"
      )
    )
  ),
  body = dashboardBody(
    tabItems(
      tabItem(
        tabName = "tab1",

        tags$head(
          tags$style(
            HTML(
              "
        .form-control {
            border-radius: 4px 4px 4px 4px;
        }

        #txt1_out {
        font-family:  'Source Sans Pro','Helvetica Neue',Helvetica,Arial,sans-serif;
        font-size: 14px;
        width: 300px; 
        max-width: 100%;
        padding: 6px 12px; 
        white-space: pre-wrap;
        }

        "
            )
          ),
          tags$script("
            Shiny.addCustomMessageHandler('selectText', function(message) {
              $('#txt2_out').prop('readonly', true);
            });
            ")
        ),
        column(
          width = 4,
          textInput(inputId = "txt1", label = "Text input no.1", value = "abcde12345"),
          strong("Text output no.1"),
          verbatimTextOutput(outputId = "txt1_out", placeholder = TRUE)
        )
      )
    )
  )
)

server <- function(input, output, session){
  output$txt1_out <- renderText({
    input$txt1
  })
}

# Run the app
shinyApp(ui, server)