R/styleParsing.R
    getFtBorderStyleFromCssBorder.RdgetFtBorderStyleFromCssBorder takes border parameters expressed as a
list (must contain an element named style) and returns a border style that
is compatible with the flextable package.
getFtBorderStyleFromCssBorder(border)
| border | A list containing an element named style.  | 
    
|---|
A flextable border style.