| border_color | R Documentation | 
The border_color() and border_subtle() functions adjust the border
color of a tag element.
border_color(x, color)
border_subtle(x, color)
| x | A tag element or .style pronoun. | 
| color | A character string specifying a color. One of, 
 | 
An object of the same type as x.
Other border utilities: 
border_width()
library(htmltools)
div(
  .style %>%
    border_color(theme_primary())
)
div(
  .style %>%
    background_subtle(theme_danger()) %>%
    border_subtle(theme_danger()) %>%
    text_emphasis(theme_danger()),
  "Danger theme with some emphasis"
)
div(
  .style %>%
    background_subtle(theme_light()) %>%
    text_emphasis(theme_light()) %>%
    border_subtle(theme_light())
)
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