%----------------------------------------------
%\usepackage{mhchem}
%=============== Font for tables ============
-\let\oldtabular\tabular
-\renewcommand{\tabular}{\small\oldtabular}
+%\let\oldtabular\tabular
+%\renewcommand{\tabular}{\small\oldtabular}
+
\hypersetup{colorlinks=true,
linkcolor=blue,
citecolor=blue,