答案1
您可以像这样重新定义导航:
\documentclass{beamer}
\usecolortheme{seahorse}
\useoutertheme[subsection=false]{miniframes}
\makeatletter
\def\insertnavigation#1{%
\vbox{{%
\usebeamerfont{section in head/foot}\usebeamercolor[fg]{section in head/foot}%
\beamer@xpos=0\relax%
\beamer@ypos=1\relax%
\beamer@ypos@offset=0\relax%
\hbox to #1{\hskip.3cm\setbox\beamer@sectionbox=\hbox{\kern1sp}%
\ht\beamer@sectionbox=1.875ex%
\dp\beamer@sectionbox=0.75ex%
\hskip-1.875ex plus-1fill%
\global\beamer@section@min@dim\z@
\dohead%
\beamer@section@set@min@width
\box\beamer@sectionbox\hfil\hskip.3cm\hskip0pt plus1filll}%
}}}
\makeatother
\begin{document}
\section{title}
\begin{frame}
abc
\end{frame}
\section{title}
\begin{frame}
abc
\end{frame}
\end{document}