Cannot centered of a row with tabularx and ding in Pifont package

Question

I type following program.

\usepackage{pifont}
\usepackage{tabularx}
\newcolumntype{C}{>{\centering\arraybackslash}X}
\newcommand{\cmark}{{\Large\bfseries\color{green!50!black}\ding{51}}}
\newcommand{\xmark}{{\Large\bfseries\color{red!50!black}\ding{55}}}
 \begin{tabularx}{\textwidth}{cCCCC}
                                     & {\scriptsize EAP-MD5} & {\scriptsize PEAP} & {\scriptsize EAP-TTLS} & {\scriptsize EAP-TLS} \\
            \hline
            ServerEC\footnotemark[1] & \xmark                & \cmark             & \cmark                 & \cmark                \\
            \hline
            ClientEC\footnotemark[1] & \xmark                & \xmark             & \xmark                 & \xmark                \\
            ClientAuth               & ID / PW               & ID / PW            & ID / PW                & EC                    \\
            ServerAuth               & NONE                  & EC                 & EC                     & EC                    \\
            \hline
        \end{tabularx}

But The PDF outputted is here.

Please help ME! Thank you.

Answer 1

Like this?

You should change definitions for \cmark and \xmark. Instead of use color{...} you should use \textcolor{<desired color}{<symvol>}. See MWE below:

\documentclass[a4paper,12pt]{article}
\usepackage{pifont}
\usepackage[table]{xcolor}
\usepackage{tabularx}
\newcolumntype{C}{>{\centering\arraybackslash}X}
\newcommand{\cmark}{{\Large\bfseries\textcolor{green!50!black}{\ding{51}}}} % <---
\newcommand{\xmark}{{\Large\bfseries\textcolor{red!50!black}{\ding{55}}}}   % <---

\begin{document}
\setlength\extrarowheight{4pt}  % <---
 \begin{tabularx}{\textwidth}{lCCCC}
                                     & {\scriptsize EAP-MD5} & {\scriptsize PEAP} & {\scriptsize EAP-TTLS} & {\scriptsize EAP-TLS} \\
            \hline
            ServerEC\footnotemark[1] & \xmark                & \cmark             & \cmark                 & \cmark                \\
            \hline
            ClientEC\footnotemark[1] & \xmark                & \xmark             & \xmark                 & \xmark                \\
            ClientAuth               & ID / PW               & ID / PW            & ID / PW                & EC                    \\
            ServerAuth               & NONE                  & EC                 & EC                     & EC                    \\
            \hline
        \end{tabularx}
\end{document}

Addendum:
A we bit simpler code you can get by use of the talltblt of tabularray package. Using it and booktabs rules (which can be used at tabularx table too) obtained table is to my opinion nicer and more correct:

\documentclass[a4paper,12pt]{article}
\usepackage{pifont}
\usepackage{xcolor}
\usepackage{tabularray}
\UseTblrLibrary{booktabs}
\newcommand{\cmark}{{\Large\bfseries\textcolor{green!50!black}{\ding{51}}}} % <---
\newcommand{\xmark}{{\Large\bfseries\textcolor{red!50!black}{\ding{55}}}}   % <---

\begin{document}

\begin{talltblr}[
caption = {table caption},
  label = {tab:?},
note{a} = {explanation ...},
note{b} = {explanation ...},
                ]{colspec = {l *{3}{X[c]}},
                  row{1} = {font=\footnotesize}
                  }
                        &   EAP-MD5 &   PEAP    &   EAP-TTLS    &   EAP-TLS     \\
    \midrule
ServerEC\TblrNote{a}    & \xmark    & \cmark    & \cmark        & \cmark        \\
    \midrule
ClientEC\TblrNote{b}    & \xmark    & \xmark    & \xmark        & \xmark        \\
ClientAuth              & ID / PW   & ID / PW   & ID / PW       & EC            \\
ServerAuth              & NONE      & EC        & EC            & EC            \\
    \bottomrule
\end{talltblr}
\end{document}