答案1
您可以\bullet
通过挤压/展平来调整其大小。
\documentclass{article}
\usepackage{fancyhdr,graphicx}
\usepackage{lipsum}
\fancyhf{}% Clear header/footer
\fancyfoot[C]{%
\makebox[0pt][c]{\thepage}% Page number
\makebox[0pt][c]{\raisebox{\baselineskip}[0pt][0pt]{\resizebox{1.2\linewidth}{1pt}{$\bullet$}}}% Varied-width line
}
\pagestyle{fancy}
\begin{document}
\lipsum
\end{document}