title: ggiraph plot doesn't resize to fit the page
body: <p>Here is my code:</p>
  
  <pre><code>library(shiny)
  library(ggplot2)
  library(ggiraph)
  
  df &lt;- data.frame(achseX = LETTERS[1:24], achseY = 1:24, facetX = as.factor(rep(1:4, each = 6)))
  
  server &lt;- function(input, output) {
    output$ggplot &lt;- renderPlot({
      ggplot(data = df) + geom_bar_interactive(aes(tooltip = achseY, x = achseX, y = achseY), stat = "identity") +
        theme_minimal() + facet_grid(.~ facetX, scales = "free_x")
    })
  
  
    output$plot &lt;- renderggiraph({
      gg &lt;- ggplot(data = df) + geom_bar_interactive(aes(tooltip = achseY, x = achseX, y = achseY), stat = "identity") +
        theme_minimal() + facet_grid(.~ facetX, scales = "free_x")
      return(ggiraph(code = print(gg), selection_type = "multiple", zoom_max = 4,
                     hover_css = "fill:#FF3333;stroke:black;cursor:pointer;",
                     selected_css = "fill:#FF3333;stroke:black;"))
    })
  }
  
  ui &lt;- fluidPage(
    "GGPLOT2:",
    plotOutput("ggplot"),
    "GGIRAPH:",
    ggiraphOutput("plot", width = "500px", height = "1000px")
  )
  
  shinyApp(ui = ui, server = server)
  </code></pre>
  
  <p>The result looks like:
  <a href="https://i.stack.imgur.com/YjKLs.png" rel="noreferrer"><img src="https://i.stack.imgur.com/YjKLs.png" alt="enter image description here"></a></p>
  
  <p>As you can see in the code, the first barplot is a <code>ggplot</code> that works the way it should. It is responsive to the site and has a rectangular format. The <code>ggiraph</code> stays in a square format instead and doesn't fit the page. </p>
  
  <blockquote>
    <p>How can I get the ggiraph to look like the ggplot?</p>
  </blockquote>
  
  <p>I tried several combinations of the width and height argument, also including <code>width = "auto"</code> and <code>height = "auto"</code>. This made the ggiraph fit the page, but still in a square format.</p>