By default, the html document created by the htmlwidgets::saveWidget which use htmltools (for example, htmlwidgets::saveWidget (reactable(iris))) has the following attributes in the body tag: <body class="vsc-initialized" style='margin: 9px; padding: 40px; "> that leads to excessive padding from the top of the page.
I have tried to find any documentation how to change the "style='padding: 40px;'" but there is no documentation, and in the code of the save_html function no styles are defined.
Please could you suggest how it is possible to change the style of the body tag and adjust the "padding: 40px" to the desired level?
The direction to the solution has been provided by cpsievert in this thread
The final solution is the following:
object2save <- reactable(iris)
object2save$sizingPolicy$padding <- 4
htmlwidgets::saveWidget(object2save, file = "example.html",
selfcontained = FALSE, libdir = "lib")