Color of the box. One of c("", "red", "orange", "yellow",
"olive", "green", "teal", "blue", "violet", "purple", "pink", "brown", "grey", "black")
ribbon
Should label be presented as ribbon.
title_side
Side of a label. One of c("top", "bottom", "top left",
"top right", "bottom left", "bottom right") if ribbon = FALSE, or one of
c("top left", "top right") if ribbon = TRUE
collapsible
Should minimize button be added to label.
width
Width of the box.
id
ID of the box.
collapse_icon
Icon class to be used for collapsing (when collapsible = TRUE).
expand_icon
Icon class to be used for expanding (when collapsible = TRUE).