add html 0px padding to html_page to avoid default padding by some browsers

Author: joshday

docs/src/settings.md

@@ -12,3 +12,4 @@ PlotlyLight.settings.style::Dict{String,String} # CSS styles for the plot <div>
 ```
 
 Check out e.g. `PlotlyLight.Settings().src` to examine default values.
+

src/PlotlyLight.jl

@@ -93,7 +93,7 @@ function html_page(o::Plot)
             h.meta(name="viewport", content="width=device-width, initial-scale=1"),
             h.meta(name="description", content="PlotlyLight.jl"),
             h.title("PlotlyLight.jl"),
-            h.style("body { padding: 0px; margin: 0px; } /* remove scrollbar in iframe */"),
+            h.style("html, body { padding: 0px; margin: 0px; } /* remove scrollbar in iframe */"),
         ),
         h.body(html_div(o))
     )
@@ -106,6 +106,9 @@ Base.show(io::IO, ::MIME"juliavscode/html", o::Plot) = show(io, MIME"text/html"(
 
 Base.display(::REPL.REPLDisplay, o::Plot) = Cobweb.preview(h.html(h.body(o, style="margin: 0px;")), reuse=settings.reuse_preview)
 
+mathjax = h.script(type="text/javascript", async=true, src="https://cdn.jsdelivr.net/npm/mathjax@3/es5/tex-mml-chtml.js")
+
+
 #-----------------------------------------------------------------------------# preset
 # `preset_template_<X>` overwrites `settings.layout.template`
 # `preset_src_<X>` overwrites `settings.src`