如何才能将一段文本置于页面中央，而忽略其上的所有其他内容？

Question

我正在尝试为信封创建文本。发件人位于左上角，收件人应位于纸张边缘的垂直和水平居中位置。也就是说，发件人的存在不应改变收件人的垂直对齐方式。

\documentclass{letter}
\usepackage[papersize={110mm,220mm},landscape,margin=5mm,twoside=false]{geometry}
\setlength\parskip{0pt}
\pagestyle{empty}

\begin{document}

If undeliverable, please return to:

Joe Citizen

12345 Foo St

Bar BAZ 67890

\huge
RECIPIENT LINE 1

RECIPIENT LINE 2

RECIPIENT LINE 3

\end{document}

RECIPIENT如何才能使线条相对于整个页面垂直居中？块本身应居中，但其中的文本应左对齐。

Answer 1

使用center和\vspace*{\fill}；对于收件人，最好使用tabular，以便在相应行中获得左对齐。对于回信地址，使用零高度框。

\documentclass{letter}
\usepackage[
  papersize={110mm,220mm},
  landscape,
  margin=5mm,
  twoside=false
]{geometry}

\setlength\parskip{0pt}
\setlength\parindent{0pt}
\setlength\topskip{0pt}

\pagestyle{empty}

\begin{document}

\parbox[t][0pt]{\textwidth}{
  \vspace{0pt}% to set the reference point
  \raggedright
  If undeliverable, please return to:\\
  Joe Citizen\\
  12345 Foo St\\
  Bar BAZ 67890
}

\vspace*{\fill}

\begin{center}
\huge
\begin{tabular}{@{}l@{}}
Joe Citizen\\
12345 Foo St\\
Bar BAZ 67890
\end{tabular}
\end{center}

\vspace*{\fill}

\end{document}

Answer 2

我会用tikz这个：

\documentclass{letter}
\usepackage[papersize={110mm,220mm},landscape,margin=5mm,twoside=false]{geometry}
\setlength\parskip{0pt}
\pagestyle{empty}

\usepackage{tikz}


\begin{document}

If undeliverable, please return to:

Joe Citizen

12345 Foo St

Bar BAZ 67890
\begin{tikzpicture}[remember picture,overlay]
    \node at (current page.center)
        {\huge\begin{tabular}{@{}l@{}}
            RECIPIENT LINE 1\\
            RECIPIENT LINE 21\\
            RECIPIENT LINE 3
        \end{tabular}};
\end{tikzpicture}

\end{document}