Rendering with slidy_presentation()

[wbuchanan]

The tooltips render behind the heatmap cells. I'm not sure what the CSS file is that is being used for slidy_presentations, but it seems like it should be a quick fix if the display parameter below is adjusted to make the tooltip visible.

<div class="d3heatmap-tip se" style="position: fixed; top: 463px; opacity: 0; pointer-events: none; box-sizing: border-box; display: none; left: 449px;"><table><tbody><tr><th align="right">Row</th><td>Hornet 4 Drive</td></tr><tr><th align="right">Column</th><td>gear</td></tr><tr><th align="right">Value</th><td>3</td></tr></tbody></table></div>

---
title: "test"
output: slidy_presentation

---

# Bug reproduction

```{r, eval = TRUE, echo = FALSE, cache = FALSE}
library(d3heatmap)
d3heatmap(mtcars, scale = "column", colors = "Blues")
``` Tool tip renders behind heatmap cells