Beamer Right and Left borders

Question

I want to show a thick line on the left and right borders, i found the similar quetion here Right border but just for right border, here is my MWE:

\documentclass{beamer}
\usetheme[secheader]{Madrid}
\author{diabonas}
\title{Frame border}
\setbeamertemplate{background canvas}{%
{\color{black}\hspace*{\dimexpr\paperwidth-3pt\relax}\rule{10pt}{\paperheight}}%    
}
\begin{document}
\begin{frame}
content
\end{frame}
\frame{Content}
\begin{frame}
content
\end{frame}
\end{document}

I want slides to look like this

Answer 1

TYou set the background to be first a space of length \paperwidth-3pt and then a bar of 10pt (of which only 3pt is visible). If you start with a bar of 3pt, then a space of length \paperwidth-6pt and the ending bar, it should be what you want.

\documentclass{beamer}
\usetheme[secheader]{Madrid}
\author{diabonas}
\title{Frame border}
\setbeamertemplate{background canvas}{%
{\color{black}\rule{3pt}{\paperheight}\hspace*{\dimexpr\paperwidth-6pt\relax}\rule{10pt}{\paperheight}}%    
}
\begin{document}
\begin{frame}
content
\end{frame}
\frame{Content}
\begin{frame}
content
\end{frame}
\end{document}

Answer 2

\documentclass{beamer}
% Based on: https://tex.stackexchange.com/questions/48800
\author{diabonas}
\title{Frame border}
\usepackage{tikz}
\begin{document}
{ % only on titlepage
\setbeamertemplate{background canvas}{%
\begin{tikzpicture}
    \clip (0,0) rectangle (\paperwidth,\paperheight);
    \fill[color=orange] (\paperwidth-10pt,0) rectangle (\paperwidth,\paperheight);
    % Added
    \fill[color=orange] (0,0) rectangle (10pt,\paperheight);
\end{tikzpicture}}
\maketitle
} % only on titlepage
\frame{Content}
\end{document}

Remove { % only on titlepage and } % only on titlepage and it's on every page.