title: r knitr kable padding not working with format = "html"
body: <p>I am trying to add padding to a table I am creating in an RMarkdown file that will generate both a pdf and an html flexdashboard. I know that there are a number of functions/packages I could use (pander, xtable, DT, etc.), but I would prefer to use the kable function from the knitr package.</p>
  
  <p>The trouble I am having is that the padding argument does not seem to work. I would appreciate any help in solving this without having to add custom CSS to my document.</p>
  
  <p>As a example, I have tried to run the code with padding set to 0, 10, 20 but the tables all look identical in the html file.</p>
  
  <pre><code>knitr::kable(head(cars), format = "html", padding = 0)
  knitr::kable(head(cars), format = "html", padding = 10)
  knitr::kable(head(cars), format = "html", padding = 20)
  </code></pre>
  
  <p><a href="https://i.stack.imgur.com/BwJ18m.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/BwJ18m.png" alt="enter image description here"></a></p>
  
  <p>I am using knitr_1.14 and rmarkdown_1.0, and my session information is as follows.</p>
  
  <pre><code>R version 3.3.0 (2016-05-03)
  Platform: x86_64-w64-mingw32/x64 (64-bit)
  Running under: Windows 7 x64 (build 7601) Service Pack 1
  </code></pre>