how to write make rectangle box and write in it

Question

\documentclass{article}
\usepackage{graphicx}
\usepackage{amssymb}
\begin{document}
\title{GROUP THEORY}\bfseries
\maketitle
\section{ALGEBRIC SYSTEM :}
NOTE: The algebraic system define over operator $\star$ , which is \emph{closed} and \emph{associative} is called SEMIGROUP.
\end{document}

I want to write my last sentence in rectangular box so that i can highlight it.

http://tex.stackexchange.com/questions/38354/make-an-example-and-shaded-box-like-in-the-book/38369#38369 — Arianna Angeletti, Nov 06 '13 at 12:35

score 9 · Answer 1 · answered Nov 06 '13 at 12:54

One option is to use the tcolorbox package. There are many style options for visualization. Some examples are:

\documentclass{article}
\usepackage{graphicx}
\usepackage{amssymb}
\usepackage[many]{tcolorbox}
\begin{document}
\title{GROUP THEORY}\bfseries
\maketitle
\section{ALGEBRIC SYSTEM :}

\begin{tcolorbox}
NOTE: The algebraic system define over operator $\star$ , which is \emph{closed} and \emph{associative} is called SEMIGROUP.
\end{tcolorbox}

\begin{tcolorbox}[title=NOTE:,colframe=blue,colback=blue!5!white,arc=0pt,fonttitle=\bfseries]
The algebraic system define over operator $\star$ , which is \emph{closed} and \emph{associative} is called SEMIGROUP.
\end{tcolorbox}

\newtcbtheorem[number within=section]{note}{Note}{enhanced,drop fuzzy shadow,
  colframe=red!75!black,colback=red!5!white,
  colbacktitle=red!10!white,coltitle=red!20!black}{note}

\begin{note}{}{somenote}
The algebraic system define over operator $\star$ , which is \emph{closed} and \emph{associative} is called SEMIGROUP.
\end{note}

\end{document}

enter image description here

Can you specify 'simple'? If you use the options colframe=black,colback=white,arc=0pt,outer arc=0pt you will get a rectangular box with white interior. — Thomas F. Sturm, Nov 12 '13 at 09:23

score 2 · Answer 2 · edited Apr 13 '17 at 12:34

I'd use mdframed as in my previous post

\documentclass{book}
\usepackage{xcolor}
\usepackage[framemethod=tikz]{mdframed}

\definecolor{cccolor}{rgb}{.67,.7,.67}
\begin{document}

\begin{mdframed}[outerlinecolor=black,outerlinewidth=2pt,linecolor=cccolor,middlelinewidth=3pt,roundcorner=10pt]
  This work is licensed under a Creative Commons Attribution-ShareAlike 3.0 Unported License.
  \begin{center}
    \includegraphics[scale=2]{by-nc-sa.pdf}
  \end{center}
\end{mdframed}

\end{document}

giving...

mdframed box with TikZ

how to write make rectangle box and write in it

2 Answers2