<!-- Set link to theme-settings, template-variables, theme functions -->

First, add `css: xaringan-themer.css` to your xaringan slides YAML header under `xaringan::moonreader:`.

```yaml
output:
  xaringan::moon_reader:
    lib_dir: libs
    css: xaringan-themer.css
```

Then, in a hidden chunk just after the knitr setup chunk, load **xaringanthemer** and try one of the [theme functions][theme-functions].

````markdown
```{r xaringan-themer, include = FALSE}`r ""`
library(xaringanthemer)
mono_light(
  base_color = "#1c5253",
  header_font_google = google_font("Josefin Sans"),
  text_font_google   = google_font("Montserrat", "300", "300i"),
  code_font_google   = google_font("Droid Mono")
)
```
````

```{r echo=FALSE}
if (exists('IS_README') && IS_README) {
  knitr::include_graphics("vignettes/images/example_mono_light_1c5253.png") 
} else {
  knitr::include_graphics(here::here("vignettes/images/example_mono_light_1c5253.png"))
}
```

**xaringanthemer** is <kbd>Tab</kbd> friendly -- [use autocomplete to explore][theme-settings] the [template variables][template-variables] that you can adjust in each of the themes!

<center>
```{r out.width="350px"}
knitr::include_graphics(here::here("vignettes/images/rmarkdown-template-screenshot.png"))
```
</center>

You can also skip the above and just create a *Ninja Themed Presentation* from the New R Markdown Document menu in RStudio.