# Center align glossary table

I have a glossary section which is styled as

    \usepackage[acronym]{glossaries}
\newglossarystyle{mylong}{%
\setglossarystyle{long}%
\renewenvironment{theglossary}%
{\begin{longtable}[l]{@{}p{\dimexpr 3.5cm-\tabcolsep}p{0.8\hsize}}}% <-- change the value here
{\end{longtable}}%
}
\makeglossaries


\newacronym{abc}{abc}{abc def geh}

\printglossary[title=\large List of Acronyms,

I want to center align my items but \centering and \begin{center}...\end{center} inside mylong styling has no effect. How can I center align the glossary table on page? I do not want to center align text inside columns but the whole table needs to pad a bit so it appears in the center.