title: Reduce the border/attach iframe border to another
body: <p>Below is the sample iframe app in R shiny. Wanted to check if it is possible to reduce the border. I have attached below . Can anyone please help me</p>
  
  <pre><code>library(shiny)
  members &lt;- data.frame(name=c("Name 1", "Name 2"), nr=c('BCRA1','FITM2'))
  
  ui &lt;- fluidPage(titlePanel("Getting Iframe"), 
                  sidebarLayout(
                    sidebarPanel(
                      fluidRow(
                        column(6, selectInput("Member", label=h5("Choose a option"),choices=c('BCRA1','FITM2'))
                        ))),
                    mainPanel(fluidRow(
                      htmlOutput("frame")
                    )
                    )
                  ))
  
  server &lt;- function(input, output) {
    observe({ 
      query &lt;- members[which(members$nr==input$Member),2]
      test &lt;&lt;- paste0("http://news.scibite.com/scibites/news.html?q=GENE$",query)
    })
    output$frame &lt;- renderUI({
      input$Member
      my_test &lt;- tags$iframe(src=test, height=1000, width=1035, frameborder = "yes")
      print(my_test)
      my_test
    })
  }
  
  shinyApp(ui, server)
  </code></pre>
  
  <p>Reduce this (Like can we make "b" attached to "a"</p>
  
  <p><a href="https://i.stack.imgur.com/YMEDj.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/YMEDj.png" alt="enter image description here"></a></p>