[Tex/LaTex] Reducing page margin of Springer LNCS format

Question

I am using Springer LNCS format to author a paper. However, the page margin seems to be too wide. How can it be reduced to a decent value? Here is the CLS style file. Because of post size limit, I could not post the CLS file itself. Instead, it has been hyperlinked.

Answer 1

That llncs is standard is not true, in my opinion. However, nothing prevents you from using geometry with it. Adjust to your needs the parameters I set. Of course, submitting such a document to Springer will cause rejection.

\documentclass{llncs}

\usepackage{geometry}
\geometry{
  a4paper,         % or letterpaper
  textwidth=15cm,  % llncs has 12.2cm
  textheight=24cm, % llncs has 19.3cm
  heightrounded,   % integer number of lines
  hratio=1:1,      % horizontally centered
  vratio=2:3,      % not vertically centered
}

\usepackage{lipsum} % just for the example

\begin{document}
\frontmatter                                    
\pagestyle{headings}                    

\mainmatter                                 

\title{my title}
\titlerunning{my title}

\author{author1 name\inst{1} and  author2 name\inst{1,2}}
\authorrunning{author1 name}

\authorrunning{Short author list}% Part of LEFT running header
\titlerunning{Short title}% Part of RIGHT running header

\institute{University 1 \\
\email{email1@gmail.com}
\and
University 2 \\
\email{email2@gmail.com}
}

\maketitle            

\begin{abstract}
\lipsum*[2]
\end{abstract}

\section{Introduction}

\lipsum

\end{document}