\documentclass[11pt, a4paper]{article}
\usepackage{graphicx}
\usepackage{fancyhdr}
\usepackage{xcolor}

\addtolength{\oddsidemargin}{-0.5cm}
\addtolength{\textwidth}{1cm}
\addtolength{\topmargin}{-2cm}
\addtolength{\textheight}{1cm}
\addtolength{\headheight}{3cm}
\setlength{\columnsep}{10mm}


\begin{document}
\thispagestyle{fancy}

\lfoot{}
\cfoot{}
\rfoot{}