如何像阴影一样将 tcolorbox 与边距对齐？

Question

\documentclass{article}
\usepackage{color,framed,tcolorbox}
\definecolor{shadecolor}{RGB}{241, 241, 255}

\begin{document}
    Shaded environment can align exactly with page margin: 
    \begin{shaded}
        This line is red
    \end{shaded}

    But tcolorbox can't: 
    \begin{tcolorbox}[colback=shadecolor,sharp corners=all,colframe=white!,width=\linewidth, boxrule=0pt, left skip=0pt]
    This line is red
    \end{tcolorbox}
\end{document}

我想像tcolorbox环境一样与页边距对齐shaded。我尝试过将设置width为\linewidth，但仍然不起作用。

Answer 1

grow to left by和grow to right by是帮助您满足要求的标签。

请尝试以下操作MWE：

\documentclass{article}
\usepackage{color,framed,tcolorbox}
\definecolor{shadecolor}{RGB}{241, 241, 255}

\usepackage{showframe}
\tcbuselibrary{skins}
\begin{document}
    Shaded environment can align exactly with page margin: 
    \begin{shaded}
        This line is red
    \end{shaded}

    But tcolorbox can't: 
    \begin{tcolorbox}[grow to left by=12pt,grow to right by=12pt,colback=shadecolor,sharp corners=all,colframe=white!,boxrule=0pt]
    This line is red
    \end{tcolorbox}
\end{document}

Answer 2

模拟环境的水平和垂直方向、内外间距shaded：

\documentclass{article}
\usepackage{color,framed,tcolorbox}
\definecolor{shadecolor}{RGB}{241, 241, 255}

\usepackage{showframe} % to show page frame(s)
\usepackage{lipsum}    % for \lipsum

\begin{document}
    \noindent\verb|shaded| env
    \begin{shaded}
        Environment content.\par
        \lipsum[1][1-3]
    \end{shaded}
    text after env
    
    \bigskip

    \noindent\verb|tcolorbox| env
    \begin{tcolorbox}[
      colback=shadecolor, sharp corners=all, colframe=white, boxrule=0pt,
      % horizontal spacing
      boxsep=9pt,                         % default value of \FrameSep
      left=0pt, right=0pt,
      oversize,
      % vertical spacing
      top=0pt, bottom=0pt,
      beforeafter skip balanced=\topsep,  % default value of \OuterFrameSep
      % restore \parindent
      before upper=\setlength{\parindent}{15pt},
    ]
        Environment content.\par
        \lipsum[1][1-3]
    \end{tcolorbox}
    text after env
\end{document}