我向颜色框添加了在 x 轴上移动的选项。
然而，出现了一个问题：盒子是对称的，当我将它向右移动时，左边也会向中心移动，使盒子变得非常小。如何消除这种影响？
这是代码（如果仍然有多余的内容，请告诉我。我想知道如何做 MWE）。
\documentclass[10pt,a4paper,twoside,openright]{book}
\usepackage[utf8]{inputenc}
\usepackage[T1]{fontenc}
\usepackage[left=2.5cm,right=2.5cm,top=4cm,bottom=4cm]{geometry}%réglages des marges du document selon vos préférences ou celles de votre établissemant
\setlength{\headheight}{15pt}% hauteur de l'entête
\usepackage{amsmath,amsfonts,amssymb}%extensions de l'ams pour les mathématiques
\usepackage{fancyhdr}%pour les entêtes et pieds de pages
\usepackage[most]{tcolorbox}
\usepackage[english,french]{babel}%pour un document en français
\definecolor{viol}{RGB}{134,0,175}
\tcbset{
thmbox/.style={
enhanced,
breakable,
sharp corners=all,
fonttitle=\bfseries\normalsize,
fontupper=\normalsize\itshape,
top=0mm,
bottom=0mm,
right=0mm,
%colback=white,
colframe=white,
colbacktitle=white,
%coltitle=red,
before={\vspace{0.1cm}},
after={\vspace{0.3cm}},
attach boxed title to top left={xshift=-.20\linewidth, yshift= -.5 mm},
minipage boxed title=.15\linewidth,
left skip={0.09\linewidth},
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
boxed title style={empty, size=minimal, bottom=1.5mm},
overlay unbroken ={
\draw (title.south west)--(title.south east);
\draw ([xshift=3.5mm]frame.north west)|-%
(frame.south east)--(frame.north east);},
overlay first={
\draw (title.south west)--(title.south east);
\draw ([xshift=3.5mm]frame.north west)--([xshift=3.5mm]frame.south west);
\draw (frame.north east)--(frame.south east);},
overlay middle={
\draw ([xshift=3.5mm]frame.north west)--([xshift=3.5mm]frame.south west);
\draw (frame.north east)--(frame.south east);},
overlay last={
\draw ([xshift=3.5mm]frame.north west)|-%
(frame.south east)--(frame.north east);},
},
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% DEMONSTRATION
SQ/.style={thmbox, coltitle=viol, colback=white!95!viol, left skip={.12\linewidth},
overlay unbroken ={
\draw[viol][thick] (title.south west)--(title.south east);
\draw[viol][thick] ([xshift=3.5mm]frame.north west)|-([xshift=15mm]frame.south west);
\node[anchor=east] at (frame.south east) {$\square$};},
overlay first={
\draw[viol][thick] (title.south west)--(title.south east);
\draw[viol][thick] ([xshift=3.5mm]frame.north west)--([xshift=3.5mm]frame.south west);},
overlay middle={
\draw[viol][thick] ([xshift=3.5mm]frame.north west)--([xshift=3.5mm]frame.south west);},
overlay last={
\draw[viol][thick] ([xshift=3.5mm]frame.north west)|-([xshift=3.5mm]frame.south west);
\node[anchor=east] at (frame.south east) {$\square$};},
}
}
\newtcbtheorem[auto counter, number within=section]{demo}{Démonstration}{thmbox,SQ}{theo}
\begin{document}
hi !
\begin{demo}{}{}
OH!
\end{demo}
\end{document}
此外，我还有一个次要问题：我怎样才能稍微移动一下正方形（出现在 pdf 文档中）？我希望它位于框内，而不是像现在这样一半在框外。
答案1
你搞砸了一些东西，因为你在样式thmbox中使用了样式SQ，但它们具有相同的选项但具有不同的值，然后，你再次\newtcbtheorem使用它们两者进行了定义。
我把它们分开，即使为了方便，你也可以创建一个带有选项的样式，相同对于两种风格，然后将其用于thmbox和SQ，只添加选项不同对他们每个人来说。
对于文本末尾的方形符号，我使用了\qedforasmthm和此选项：after upper={\hfill$\qed$}。
我没有改变规则设置（但对我来说它也显得有点混乱），因为我仍然不明白你想要的最终外观是什么。
\documentclass[10pt,a4paper,twoside,openright]{book}
\usepackage[utf8]{inputenc}
\usepackage[T1]{fontenc}
\usepackage{mwe}% <-- for testing purpose only, delete it
\usepackage[left=2.5cm,right=2.5cm,top=4cm,bottom=4cm]{geometry}%réglages des marges du document selon vos préférences ou celles de votre établissemant
\setlength{\headheight}{15pt}% hauteur de l'entête
\usepackage{amsmath,amsfonts,amssymb, amsthm}%amsthm added
\usepackage{fancyhdr}%pour les entêtes et pieds de pages
\usepackage[most]{tcolorbox}
\usepackage[english,french]{babel}%pour un document en français
\definecolor{viol}{RGB}{134,0,175}
\tcbset{
thmbox/.style={
enhanced,
breakable,
sharp corners=all,
fonttitle=\bfseries\normalsize,
fontupper=\normalsize\itshape,
top=0mm,
bottom=0mm,
right=0mm,
%colback=white,
colframe=white,
colbacktitle=white,
%coltitle=red,
before={\vspace{0.1cm}},
after={\vspace{0.3cm}},
attach boxed title to top left={xshift=-.20\linewidth, yshift= -.5 mm},
minipage boxed title=.15\linewidth,
left skip={0.09\linewidth},
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
boxed title style={empty, size=minimal, bottom=1.5mm},
overlay unbroken ={
\draw (title.south west)--(title.south east);
\draw ([xshift=3.5mm]frame.north west)|-%
(frame.south east)--(frame.north east);},
overlay first={
\draw (title.south west)--(title.south east);
\draw ([xshift=3.5mm]frame.north west)--([xshift=3.5mm]frame.south west);
\draw (frame.north east)--(frame.south east);},
overlay middle={
\draw ([xshift=3.5mm]frame.north west)--([xshift=3.5mm]frame.south west);
\draw (frame.north east)--(frame.south east);},
overlay last={
\draw ([xshift=3.5mm]frame.north west)|-%
(frame.south east)--(frame.north east);},
},
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% DEMONSTRATION
SQ/.style={%thmbox,
enhanced,
breakable,
sharp corners=all,
fonttitle=\bfseries\normalsize,
fontupper=\normalsize\itshape,
colframe=white,
colback=white!95!viol,
colbacktitle=white!95!viol,
coltitle=viol,
before={\vspace{0.1cm}},
after={\vspace{0.3cm}},
attach boxed title to top left={xshift=-.25\linewidth%, yshift= -.5 mm
},
minipage boxed title=.23\linewidth,
after upper={\hfill$\qed$},
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%boxed title style={left=0mm, boxrule=0pt, boxsep=0pt},
left skip={.25\linewidth},
overlay unbroken ={
\draw[viol][thick] (title.south west)--(title.south east);
\draw[viol][thick] ([xshift=3.5mm]frame.north west)|-([xshift=15mm]frame.south west);},
overlay first={
\draw[viol][thick] (title.south west)--(title.south east);
\draw[viol][thick] ([xshift=3.5mm]frame.north west)--([xshift=3.5mm]frame.south west);},
overlay middle={
\draw[viol][thick] ([xshift=3.5mm]frame.north west)--([xshift=3.5mm]frame.south west);},
overlay last={
\draw[viol][thick] ([xshift=3.5mm]frame.north west)|-([xshift=3.5mm]frame.south west);},
}
}
\newtcbtheorem[auto counter,
number within=section]{demo}{Démonstration}{SQ}{theo}
\begin{document}
hi !
\blindtext% <-- for testing purpose only, delete it
\begin{demo}{}{}
OH!
\end{demo}
\blindtext% <-- for testing purpose only, delete it
\end{document}
