\documentclass{article}\usepackage{longtable}\begin{document}\begin{longtable}[c]{|p{3cm}|p{3cm}|}\hlineblablabla &\begin{enumerate}\item first\item second\end{enumerate}\\\hline\end{longtable}\end{document}
\begin{tabular} [c]{p{3cm} p{3cm}}\textbf{Числа} &\begin{minipage}{10cm}Числові константи можуть мати одну з трьох форм:\\\begin{itemize}\item Десяткову, напр. 123;\item Шістнадцяткову, напр. 0x7B;\item n\_XXX де:\\\end{itemize}\end{minipage}\end{tabular}
\begin{tabular} {p{3cm} p{3cm}}\textbf{Числа} &\begin{minipage}[t]{10cm}Числові константи можуть мати одну з трьох форм:\\\begin{itemize}\item Десяткову, напр. 123;\item Шістнадцяткову, напр. 0x7B;\item n\_XXX де:\\\end{itemize}\end{minipage}\end{tabular}
Floating figures and tables ordinarily come out the same width as the page, but in two-column documents they’re restricted to the width of the column. This is sometimes not good enough; so there are alternative versions of the float environments — in two-column documents, figure* provides a floating page-wide figure (and table* a page-wide table) which will do the necessary.The “*”ed float environments can only appear at the top of a page, or on a whole page — h or b float placement directives are simply ignored.Unfortunately, page-wide equations can only be accommodated inside float environments. You should include them in figure environments, or use the float or ccaptionpackage to define a new float type.
\usepackage{fancyhdr}
