2.11 countdown
countdown facilita colocar un temporizador de cuenta regresiva simple en diapositivas y documentos HTML escritos en R Markdown.
{r}
#devtools::install_github("gadenbuie/countdown")
library(countdown)
countdown(minutes = 0, seconds = 10,
top = 0, bottom = 0,
left = 0, right = 0,
margin = "15%",
font_size = "8em",
warn_when = 5, play_sound = TRUE)