LaTex 在双栏环境下制定跨栏文字边框

1. 创建一个带星号的浮动环境

比如：
\begin{figure*}[位置]
your figure
\caption[目录标题内容]{标题内容}
\end{figure*}

\begin{table*}[位置]
\caption[目录标题内容]{标题内容}
your table
\end{table*}

https://blog.youkuaiyun.com/archielau/article/details/7980516

2. 添加边框

如：

1. \fbox{%
   \parbox{0.3\textwidth}{
   yur content.
   }
   }

https://blog.youkuaiyun.com/qq_39818432/article/details/84074437

2. \usepackage{framed}
   \begin{framed}
   your content.
   \end{framed}

https://blog.youkuaiyun.com/virhuiai/article/details/7879569