删除缩进

Question

如何删除枚举和文本之间的缩进？我试过了，\noindent但没有成功。

    \documentclass[12pt]{article}
    \usepackage[utf8]{inputenc}
    \usepackage{graphicx}
    \usepackage[left=1.27cm,right=1.27cm,top=0.7cm,bottom=1.3cm]{geometry}
    \usepackage{fancyhdr}
    \usepackage{enumitem}
    \setlength{\parindent}{0pt}
    \usepackage{xcolor}
    \def\Date{22/03/22}
    
    \begin{document}
    \begin{enumerate}[label=\Alph*]
        \item   \textbf{Introduction}
        \begin{enumerate}[label=\arabic*.]
        \color{gray}
        
        \item   Purpose
        \vspace{0.5cm}
        
        \color{black}
     This procedure describes the risk management method that must be applied: 
        Within the framework of the processes control,
        Within the framework of the process of product realization.
    
    The Quality System Risk management is a systematic process for identification, assessment, control, communication and review of risks to the quality system processes. It is just acknowledging that risk happens, and taking measures to ensure we are completely prepared for it.
    
      \vspace{0.5cm}
    \color{gray}
     \item  Field of application
     
    \color{black}
      \vspace{0.5cm}
    This procedure applies to all process and product risk analyses conducted within DiappyMed. 
    
      \vspace{0.5cm}
    \color{gray}
     \item  Definitions
       \vspace{0.5cm}
       
    \color{black}
    \textbf{Risk Analysis}
    Use of available information to identify hazardous phenomena and estimate the risk
    
    \textbf{Damage}
    Physical injury or damage to the health of persons, or damage to property or the environment
    
    \textbf{Severity}
    Measure of the possible consequences of a dangerous phenomenon
    
    
    \end{enumerate}
    \end{enumerate}
    \end{document}

Answer 1

description按照建议使用修改后的列表@Marco Daniel 回答在您的情况下，可以编写更短更简单的代码：

\documentclass[12pt]{article}
\usepackage{geometry}
\usepackage{enumitem}
\newcounter{descriptcount}
\usepackage{xcolor}

\setlength{\parindent}{0pt}

\begin{document}
\begin{enumerate}[label=\bfseries\Alph*,wide]
\item\textbf{Introduction}
    \begin{description}[before={\setcounter{descriptcount}{0}},%
                        font=\color{gray}\normalfont%
                             \stepcounter{descriptcount}\thedescriptcount.~,
                        topsep=5mm,itemsep=3mm,parsep=3mm,
                        wide
                             ]
        \item[Purpose]~

        This procedure describes the risk management method that must be applied:
        Within the framework of the processes control,
        Within the framework of the process of product realization.

        The Quality System Risk management is a systematic process for
        identification, assessment, control, communication and review of
        risks to the quality system processes. It is just acknowledging
        that risk happens, and taking measures to ensure we are completely
        prepared for it.

        \item[Field of application]~

        This procedure applies to all process and product risk analyses
        conducted within DiappyMed.

        \item[Definitions]~

        \textbf{Risk Analysis}
        Use of available information to identify hazardous phenomena
        and estimate the risk

        \textbf{Damage}
        Physical injury or damage to the health of persons, or damage
        to property or the environment

        \textbf{Severity}
        Measure of the possible consequences of a dangerous phenomenon
    \end{description}
\end{enumerate}
\end{document}

Answer 2

像这样吗？（如果结果wide=0pt太极端，不符合你的口味，那就left=0pt尝试一下吧。）

\documentclass[12pt]{article}
\usepackage[hmargin=1.27cm,top=0.7cm,bottom=1.3cm]{geometry}
\usepackage{enumitem}
\setlength{\parindent}{0pt}
\usepackage{xcolor}

\begin{document}

\begin{enumerate}[label=\bfseries\Alph*,wide=0pt]
\item\textbf{Introduction}

    \begin{enumerate}[label=\color{gray}\arabic*.,
                      topsep=5mm,itemsep=5mm,
                      wide=0pt]
    
    \item \textcolor{gray}{Purpose}
    \par\vspace{3mm}
    
    This procedure describes the risk management method that must be applied: 
    Within the framework of the processes control,
    Within the framework of the process of product realization.

    The Quality System Risk management is a systematic process for
    identification, assessment, control, communication and review of 
    risks to the quality system processes. It is just acknowledging 
    that risk happens, and taking measures to ensure we are completely
    prepared for it.

    \item \textcolor{gray}{Field of application}
    \par\vspace{3mm}
    
    This procedure applies to all process and product risk analyses 
    conducted within DiappyMed. 

    \item \textcolor{gray}{Definitions}
    \par\vspace{3mm}
    
    \textbf{Risk Analysis}
    Use of available information to identify hazardous phenomena 
    and estimate the risk

    \textbf{Damage}
    Physical injury or damage to the health of persons, or damage 
    to property or the environment

    \textbf{Severity}
    Measure of the possible consequences of a dangerous phenomenon

    \end{enumerate}
\end{enumerate}
\end{document}