plain1.tex

\documentclass[10pt, xcolor={dvipsnames}]{beamer}

\usepackage{booktabs}
\usepackage{graphicx}
\usepackage{tikz}

\setbeamercolor{alerted text}{fg=blue}
\setbeamercolor{block title}{fg=blue,bg=blue!25}
\setbeamercolor{block body}{fg=black,bg=blue!10}

\setbeamertemplate{navigation symbols}{}
\setbeamertemplate{footline}{
    \hfill
    \begin{tikzpicture}
        \node[circle, inner sep=2pt, fill=blue, anchor=center] at (0em,0em) {\bfseries\color{white}\insertframenumber{}/\inserttotalframenumber};
    \end{tikzpicture}
    \hspace{1em}
    \vspace{2em}
}
\setbeamertemplate{blocks}[rounded][shadow=false]
\setbeamertemplate{itemize subitem}[circle]
\setbeamertemplate{enumerate items}[circle]

\setbeamersize{text margin left=2em,text margin right=2em}
\setlength{\leftmargini}{1.5em}
\setlength{\leftmarginii}{1em}

\title[]{Plain format with page numbers}
\author[]{Vachan Potluri}
\date{\today}

\begin{document}
\input{common_content}
\end{document}