How to change twocolumn to onecolumn in the supplementary?

[YuanShunJie1]

In the supplementary materials, the two-column layout looks a bit cramped, and I would like to change it to a single-column layout. I tried changing \documentclass[10pt,twocolumn,letterpaper]{article} to \documentclass[10pt,onecolumn,letterpaper]{article}, but it didn't work. Could you please advise me on how to modify it? Thank you very much!

[apoorvkh]

This is actually hardcoded in the cvpr.sty file. But if you want to do this, you could add

\let\titleold\title
\renewcommand{\title}[1]{\titleold{#1}\newcommand{\thetitle}{#1}}
\def\maketitlesupplementary
   {
   \newpage
   \centering
   \Large
   \textbf{\thetitle}\\
   \vspace{0.5em}Supplementary Material \\
   \vspace{1.0em}
   }

before the \maketitlesupplementary line in _supplementary.tex.

[This modifies the \maketitlesupplementary definition from here.]