如何让表格中的内容左对齐？

Question

我又容易忘记 Latex 了。

如何使内容从左边开始，而第一行保持在中间？

我的 MWE：

  \documentclass{article}
\usepackage{cases}
\usepackage{tabularx}
\usepackage{tikz}
\usepackage{subcaption}
\usepackage{table}

\begin{document}

\begin{center}
    \begin{longtable}{|c|C{8cm}|C{8cm}|}
        \hline 
        \bf{No.} & \bf{Revision} & \bf{Action Taken} \tabularnewline
        \hline
        1. & Testing Testing Testing & Action Taken Action Taken \tabularnewline
        \hline
        2. & Testing Testing Testing & Action Taken Action Taken  \tabularnewline
        \hline
    \end{longtable}
\end{center}


\end{document}

Answer 1

\documentclass{article}
\usepackage{ragged2e}
\usepackage{longtable, makecell, tabularx}
\renewcommand\theadfont{\normalsize\bfseries}
\renewcommand\theadgape{}


\begin{document}

\renewcommand\arraystretch{1.2}
    \begin{longtable}{|c|*{2}{>{\RaggedRight\hspace{0pt}}p{5cm}|}}% with 8cm columns table will  not fit on page
        \hline
        \thead{No.} & \thead{Revision} & \thead{Action Taken}   \tabularnewline
        \hline
        1. & Testing Testing Testing & Action Taken Action Taken \tabularnewline
        \hline
        2. & Testing Testing Testing & Action Taken Action Taken  \tabularnewline
        \hline
    \end{longtable}

\end{document}