# centering vertically the abstract element

How can I put at the center of the page the element abstract?I put it in a blank page but it is at the top. I would center it vertically.any idea?

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To put the abstract on a page on its own in the middle of the page will depend on the class you are using. With the article class you have two ways of having the abstract in the middle of a page of its own.

1. Using the titlepage option to the class. The will centre (horizontally and vertically) the title / author and so on, on the first page (the so called "titlepage") and the abstract with be placed on a page on its own as well centred both vertically and horizontally.

\documentclass[titlepage]{article}
\usepackage{lipsum}

\author{A. N. Onymous}
\title{The Title}

\begin{document}
\maketitle

\begin{abstract}
\lipsum[1]
\end{abstract}

\lipsum[2-5]

\end{document}

2. You can also do it manually by forcing a page break before invoking the abstract environment, however, \vspace or \vfill at the top of the page do not work and you need to add a \null before the first \vspace:

\documentclass[titlepage]{article}
\usepackage{lipsum}

\author{A. N. Onymous}
\title{The Title}

\begin{document}
\maketitle

\newpage
\null\vspace{\fill}
\begin{abstract}
\lipsum[1]
\end{abstract}
\vspace{\fill}
\newpage

\lipsum[2-5]

\end{document}


Note that the title page option will not entirely centre the abstract but have a smaller space at the top than at the bottom (which look more elegant I think)

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A simple way to center an object is to put \vspace{\fill} before and after it. So, you could try something like this.

\documentclass{article}
\author{A Clever Person}
\title{A nice article}
\begin{document}
\maketitle
\vspace{\fill}
\begin{abstract}
This is a profound article.
\end{abstract}
\vspace{\fill}
\newpage
abc
\end{document}

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This will only vertically align the abstract below the title/author part. If you add a \clearpage or \newpage after the \maketitle it will not work anymore. In this particular instance, loading the class with the titlepage option to the article class will put the abstract by default vaguely in the middle of a page on its own. – ArTourter Jul 15 '12 at 13:37
Just use \vspace* in place of \vspace` in that case. – Ian Thompson Jul 15 '12 at 13:50