title: Background color in tabsetPanel in Shiny
body: <p>How can I get a white background in <code>tabsetPanel</code>. For better understanding of my problem I'll bring up an example:</p>
  
  <p>In my ui.R file I have the following:</p>
  
  <pre><code>mainPanel( wellPanel(wellPanel(plotOutput("densityPlot", height="500px"))), 
                                 wellPanel(tabsetPanel(type = "tabs", 
  
          tabPanel(h5("Text1"),p("Text" )),
          tabPanel(h5("Text2"), p("Text") ),                   
          tabPanel(h5("Text3"), p("Text"))),
          br(),
          br(),
          br()                           
      ))
  </code></pre>
  
  <p>To make it more clear please have a look at the picture below:
  <img src="https://i.stack.imgur.com/poTNr.png" alt="enter image description here"></p>
  
  <p>The difference is the white background area inside of any tagPanel. This combination of grey and white is the problem. Has anyone an idea, how can I get such a tagPanals.</p>