title: Is it possible to remove horizontal lines in Kable kableextra with html option?
body: <p>I am trying to create a table using kable/kableextra without showing the horizontal lines in the table except for the first row which is the row names.</p>
  
  <pre><code>```
  {r echo=FALSE}
  library(knitr)
  library(kableExtra)
  options(knitr.kable.NA = '')
  dt &lt;- mtcars[1:5, 1:6]
  kable(dt, "html") %&gt;%
    kable_styling(full_width = F, position = "left") %&gt;%
    row_spec(0, align = "c",bold=T ) %&gt;%
    column_spec(1, bold = T)
  ```
  </code></pre>
  
  <p>In the code above there is a line below the first row, which I like since those are row names, but there are lines between every row which I would like to remove.</p>
  
  <p>Ideally I would like to have a slightly thicker line at the top at bottom of this table.  Similar to the booktabs look in LaTeX.</p>
  
  <p>I have read the documentation but the CSS is beyond me.</p>
  
  <p>Thanks for any suggestions.</p>