title: What is the Shiny default font?
body: <p>What is the Shiny default font? Where to look it up?</p>
  
  <pre><code>library(shiny)
  
  ui &lt;- fluidPage("What font is used here?")
  
  server &lt;- function(input, output, session) {}
  
  shinyApp(ui, server)
  </code></pre>