put a table on its own page latex code example

Example 1: making simple table in latex

\begin{tabularx}{0.8\textwidth} { 
  | >{\raggedright\arraybackslash}X 
  | >{\centering\arraybackslash}X 
  | >{\raggedleft\arraybackslash}X | }
 \hline
 item 11 & item 12 & item 13 \\
 \hline
 item 21  & item 22  & item 23  \\
\hline
\end{tabularx}

Example 2: latex how to position table

%Preamble
\usepackage{float}
\restylefloat{table}

%Document
\begin{table}[H]...
% You need the [H] option on the table so it won't be repositioned