降低投影机页脚的高度

Question

我想降低 Beamer 中页脚的高度。我试过，\setbeamerfont{footline}{size=\fontsize{0}{0}\selectfont}但有一次，这不再能降低高度了。另外，如果页脚中的文本能与幻灯片标题垂直对齐就更好了。这是我的代码。

\documentclass{beamer}
\usetheme{metropolis} 
\setbeamertemplate{frame numbering}[fraction]

\title{My Title}
\subtitle{My Subtitle}
\author{My Name}
\date{}
\institute{Reference}

\setbeamertemplate{frame footer}{\insertauthor\hfill\insertsubtitle}
\setbeamerfont{footline}{size=\fontsize{0}{0}\selectfont}
\setbeamerfont{page number in head/foot}{size=\tiny}

\setbeamercolor{footline}{fg=white,bg=black}
\setbeamercolor{frametitle}{fg=white,bg=black}

\begin{document}
\begin{frame}
\titlepage\thispagestyle{empty}
\end{frame}
\begin{frame}[t]{Contents}\vspace{3pt}
\begin{enumerate}
\item First Point
\item Second Point
\item ...
\end{enumerate}
\end{frame}
\end{document}

Answer 1

将字体大小减小到 0 没有帮助，因为该尺寸的字体不可用，并且将被替换为下一个更大的尺寸，即 3pt。

要降低脚注线的高度，您可以调整投影仪盒的填充：

\documentclass{beamer}
\usetheme{moloch}% modern fork of the metropolis theme
\setbeamertemplate{page number in head/foot}[totalframenumber]

\title{My Title}
\subtitle{My Subtitle}
\author{My Name}
\date{}
\institute{Reference}

\setbeamertemplate{frame footer}{\insertauthor\hfill\insertsubtitle}
\setbeamerfont{footline}{size=\fontsize{0}{0}\selectfont}
\setbeamerfont{page number in head/foot}{size=\tiny}

\setbeamercolor{footline}{fg=white,bg=black}
\setbeamercolor{frametitle}{fg=white,bg=black}


\setbeamertemplate{footline}{%
  \begin{beamercolorbox}[wd=\textwidth, sep=1ex]{footline}%
    \hspace{0.3cm}
    \usebeamerfont{page number in head/foot}%
    \usebeamertemplate*{frame footer}
    \hfill%
    \usebeamertemplate*{page number in head/foot}
  \end{beamercolorbox}%
}

\begin{document}
\begin{frame}
\titlepage\thispagestyle{empty}
\end{frame}
\begin{frame}[t]{Contents}\vspace{3pt}
\begin{enumerate}
\item First Point
\item Second Point
\item ...
\end{enumerate}
\end{frame}
\end{document}