centering tables

Question

I am trying to create my CV, using tables. I want them in the center of the page, but they continue to position a little bit to the left. I am using the command \centering before the environment tabular. I think I understood the reason, that is the text on the first column is not long enough, in the second table. How can I solve this?

The first table is centered, but the second, as you can noticed, is not.

This is the code:

\documentclass[12pt, Arial]{article}

\usepackage{float} % force LaTex to not reposition the tables
\usepackage{xcolor} % used to change the colour of the author
\usepackage{hyperref} % to use links 

% BEGINNING OF THE DOCUMENT
\begin{document}
%
\renewcommand{\baselinestretch}{1.3}
%
\maketitle
%
\subsection*{Personal Information}
\begin{table}[H]
    \centering
    \setlength{\tabcolsep}{25pt}
        \begin{tabular}{ r | l}
            \textbf{Name and surname} & Barack \\
            \textbf{Address} & Washington\\     
            &USA\\
            \textbf{Number} & +1231231231231 \\
            \textbf{E-mail addresses} & barack@obama.usa \\
            \textbf{Nationality} & American \\
            \textbf{Birth} & 28/10/1923 \\
            \textbf{Gender} & Male \\
        \end{tabular}
\end{table}
%
%
\subsection*{Education}
\begin{table}[H]
    \centering
    \setlength{\tabcolsep}{25pt}
        \begin{tabular}{ r | l}
            \textbf{University} & \textcolor{blue}{\href{https://www.google.com}{google}} \\
            \textbf{Faculty} & Science of Informatics\\
            \textbf{Date} & 1900 - present \\   
            \textbf{Country} & Earth \\
        \end{tabular}
\end{table}
\end{document}

Answer 1

You want cells as wide as half the text width, but to also subtract the intercolumn padding and the rule width.

It's also better to define an environment, rather than repeating over and over the same input.

\documentclass[12pt]{article}
\usepackage{array,calc,xcolor}
\usepackage{hyperref}
\hypersetup{
  colorlinks,
  urlcolor=blue,
}

\newenvironment{data}
 {\par\centering
  \setlength{\tabcolsep}{25pt}%
  \begin{tabular}{
    @{}% no padding at the left
    >{\raggedleft\bfseries}p{.5\textwidth-\tabcolsep-.5\arrayrulewidth}% right aligned column
    |% separator
    >{\raggedright\arraybackslash}p{.5\textwidth-\tabcolsep-.5\arrayrulewidth}% left aligned column
    @{}% no padding at the right
  }}
  {\end{tabular}\par}

\linespread{1.3}

\begin{document}
  %
  %
  % \maketitle
  %
\subsection*{Personal Information}

\begin{data}
Name and surname & Barack \\
Address          & Washington\newline USA \\
Number           & +1231231231231 \\
E-mail addresses & \texttt{barack@obama.usa} \\
Nationality      & American \\
Birth            & 28/10/1923 \\
Gender           & Male \\
\end{data}

\subsection*{Education}

\begin{data}
University & \href{https://www.google.com}{google} \\
Faculty    & Science of Informatics\\
Date       & 1900 -- present \\
Country    & Earth \\
\end{data}
\end{document}

Answer 2

Do you want something like this?

\documentclass[12pt, Arial]{article}
\usepackage{array}
\usepackage{float} % force LaTex to not reposition the tables
\usepackage{xcolor} % used to change the colour of the author
\usepackage{hyperref} % to use links

% BEGINNING OF THE DOCUMENT
\begin{document}
  %
  \renewcommand{\baselinestretch}{1.3}
  %
  % \maketitle
  %
  \subsection*{Personal Information}

  {\centering
    \setlength{\tabcolsep}{25pt}
    \begin{tabular}{ >{\raggedleft}p{.5\linewidth} | p{.5\linewidth} }
      \textbf{Name and surname} & Barack \\
      \textbf{Address} & Washington\\
      &USA\\
      \textbf{Number} & +1231231231231 \\
      \textbf{E-mail addresses} & barack@obama.usa \\
      \textbf{Nationality} & American \\
      \textbf{Birth} & 28/10/1923 \\
      \textbf{Gender} & Male \\
    \end{tabular}}
  %
  %
  \subsection*{Education}

  {\centering
    \setlength{\tabcolsep}{25pt}
    \begin{tabular}{ >{\raggedleft}p{.5\linewidth} | p{.5\linewidth} }
      \textbf{University} & \textcolor{blue}{\href{https://www.google.com}{google}} \\
      \textbf{Faculty} & Science of Informatics\\
      \textbf{Date} & 1900 - present \\
      \textbf{Country} & Earth \\
    \end{tabular}}
\end{document}

Answer 3

A solution with the tabularx package. It doesn't have to be centred since its total width is equal to \linewidth, and doesn't require the table environment since you do not want it to float. I managed to use Arial with the winfonts package (to install oneself: it is not part of TeX Live nor MiKTeX. Actually, it would be simpler to use it directly with Xe/LuaLaTeX and the fontspec package.

It is not recommended to change \baselinestretch as it has unwanted side effects. I replaced it with the setspace package, wich cater for those side effects, and the onehalfspacing switch.

    \documentclass[12pt, Arial]{article}
    \usepackage[utf8]{inputenc}
    \usepackage[T1]{fontenc}
    \usepackage{lmodern}
    \usepackage[x11names]{xcolor} % used to change the colour of the author
    \usepackage{tabularx, colortbl}
    \usepackage{setspace}
    \usepackage{winfonts}
    \renewcommand\sfdefault{arial}

    \usepackage{hyperref} % to use links
    % BEGINNING OF THE DOCUMENT
    \begin{document}
    \sffamily
    \onehalfspacing
    %\maketitle
    %
    \subsection*{Personal Information}
    \medskip
    \setlength{\tabcolsep}{25pt}
    \arrayrulecolor{Turquoise1!50!}\setlength\arrayrulewidth{.8pt}
    \begin{tabularx}{\linewidth}{>{\raggedleft}X | X}
    \textbf{Name and surname} & Barack \\
    \textbf{Address} & Washington\\
    &USA\\
    \textbf{Number} & +1231231231231 \\
    \textbf{E-mail addresses} & barack@obama.usa \\
    \textbf{Nationality} & American \\
    \textbf{Birth} & 28/10/1923 \\
    \textbf{Gender} & Male \\
    \end{tabularx}

    \subsection*{Education}
    \medskip
    \begin{tabularx}{\linewidth}{>{\raggedleft}X |X}
    \textbf{University} & \textcolor{blue}{\href{https://www.google.com}{google}} \\
    \textbf{Faculty} & Science of Informatics\\
    \textbf{Date} & 1900 - present \\
    \textbf{Country} & Earth \\
    \end{tabularx}

    \end{document} 

Answer 4

One solution using the package tabu.

\documentclass[12pt, Arial]{article}

\usepackage{float} % force LaTex to not reposition the tables
\usepackage{xcolor} % used to change the colour of the author
\usepackage{hyperref} % to use links 
\usepackage{tabu}

% BEGINNING OF THE DOCUMENT
\begin{document}
%
\renewcommand{\baselinestretch}{1.3}

\subsection*{Personal Information}
\begin{table}[H]
    \centering
    \setlength{\tabcolsep}{25pt}
        \begin{tabu}{>{\bfseries} X[r] | X[l]}
            Name and surname & Barack \\
            Address & Washington\\     
            &USA\\
            Number & +1231231231231 \\
            E-mail addresses & barack@obama.usa \\
            Nationality & American \\
            Birth & 28/10/1923 \\
            Gender & Male \\
        \end{tabu}
\end{table}
%
%
\subsection*{Education}
\begin{table}[H]
    \centering
    \setlength{\tabcolsep}{25pt}
        \begin{tabu}{>{\bfseries} X[r]|X[l]}
            University & \textcolor{blue}{\href{https://www.google.com}{google}} \\
            Faculty & Science of Informatics\\
            Date & 1900 - present \\   
            Country & Earth \\
        \end{tabu}
\end{table}
\end{document}