如何使用 tcolorbox 增加框阴影大小

Question

在这里我面临的挑战是修复阴影大小。默认情况下，阴影较小。但我想要更大的阴影厚度。请提供更好的解决方案来解决这个问题。

梅威瑟：

\documentclass{book}

\usepackage{lipsum}

\usepackage[skins]{tcolorbox}
\tcbuselibrary{breakable}
\tcbuselibrary{hooks}%YOU MUST USE THIS FOR <extras last pre> KEY

\begin{document}

\newenvironment{shadowbox}{\par
\begin{tcolorbox}[drop shadow southeast,
enhanced,colback=red!5!white,colframe=red!75!black]
}{\end{tcolorbox}}

\begin{shadowbox}
Economic feasibility cost is oftentimes the determining factor if the organization will move forward with the proposed solution. Differentiating the cost-effectiveness of the proposed solution as it relates with short- and long-term business goals can best facilitate the negotiation. Can the solution be implemented in phases allowing the organization to allocate funding incrementally?

\end{shadowbox}

\end{document}

Answer 1

阴影可通过阴影选项配置（参见 4.15 版手册第 188 页）.举例来说：

shadow={4mm}{-3mm}{0mm}{black!50!white}

代码：

\documentclass{book}

\usepackage{lipsum}

\usepackage[skins]{tcolorbox}
\tcbuselibrary{breakable}
\tcbuselibrary{hooks}%YOU MUST USE THIS FOR <extras last pre> KEY

\begin{document}

\newenvironment{shadowbox}{\par
\begin{tcolorbox}[shadow={4mm}{-3mm}{0mm}{black!50!white},
enhanced,colback=red!5!white,colframe=red!75!black]
}{\end{tcolorbox}}

\begin{shadowbox}
Economic feasibility cost is oftentimes the determining factor if the organization will move forward with the proposed solution. Differentiating the cost-effectiveness of the proposed solution as it relates with short- and long-term business goals can best facilitate the negotiation. Can the solution be implemented in phases allowing the organization to allocate funding incrementally?

\end{shadowbox}

\end{document}