title: Shrink DT::dataTableOutput Size
body: <p>I have a shiny interface, and I use <code>DT::dataTableOutput</code> and <code>DT::renderDataTable</code> a lot. However, I wonder if there's a way to shrink the datatable's size, e.g., making the font and the table smaller. How should I do this? </p>
  
  <p>Let's say I have the following code:</p>
  
  <pre><code>foo &lt;- function(){
    shinyApp(
      ui = fluidPage(
        DT::dataTableOutput("table")
      ),
  
      server &lt;- function(input, output) {
        x &lt;- data.frame(1:5, 2:6)
        output$table &lt;- DT::renderDataTable(x)
      }
    )
  }
  </code></pre>
  
  <p>What options or tags should I add? </p>