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enter image description here How to create this type of example box? Thank you!

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  • with tcolorbox or mdframed.
    – Ignasi
    Mar 8, 2017 at 17:58
  • 1
    I would say: Typical tcolorbox environment...
    – user31729
    Mar 8, 2017 at 18:03

2 Answers 2

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A possibility is the usage of tcolorbox like this:

\documentclass[11pt]{standalone}

\usepackage{tcolorbox}

\newcommand{\myexample}[2]{
    \begin{tcolorbox}[colback=black!5!white,colframe=black,title={Example: #1}]
        #2
    \end{tcolorbox}
}

\begin{document}
\myexample{test}{This is just a test}
\end{document}

The result of above code

To get something which looks more like the example image provided (thanks to Christian Hupfer) you could use:

\documentclass[11pt]{standalone}
\usepackage{tcolorbox}
\tcbuselibrary{skins}
\newcommand{\myexample}[2]{
    \begin{tcolorbox}[enhanced,colback=black!5!white,colframe=black,sharp corners,title={Example: #1}]
        #2
    \end{tcolorbox}
}

\begin{document}
\myexample{test}{This is just a test}
\end{document}

Which results in:

result of second code snippet

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  • 1
    With skins library, the enhanced and `sharp corners, it would even look more like the example in the O.P. screen shot
    – user31729
    Mar 8, 2017 at 18:38
  • @ChristianHupfer I never used sharp corners, thanks for the tip. I don't think OP needs something that looks just like the example because the question was how to create this type of boxes. Feedback from OP might help here.
    – Skillmon
    Mar 8, 2017 at 18:40
  • @ChristianHupfer I've added the changes you suggested in a second code snippet.
    – Skillmon
    Mar 8, 2017 at 18:57
  • @Duy if this answer satisfies your needs you should accept it.
    – Skillmon
    Mar 9, 2017 at 19:39
  • @skillmon I use \documentclass{dmathesis} so it can not run the code. It appears "Can be only used in preamble". Could you help me fix it?
    – Duy
    Apr 12, 2017 at 6:31
1

Another possibility would be to use a table to do something like this...

Code:

\documentclass{amsart}
\usepackage{lipsum}
\usepackage[table]{xcolor}
\usepackage{color}
\usepackage{array}
\begin{document}

\begin{table}[htp]
    \begin{tabular}{|cp{5in}c|}
    \hline
\cellcolor{black!100}&\multicolumn{1}{p{5in}}{\cellcolor{black!100}{\color{white}\Large{Some Title Here...}}}&\cellcolor{black!100}\\\hline
         &\vskip .01in \lipsum[1]&
    \end{tabular}
    \end{table}
\end{document}

Yields:

enter image description here

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  • Why do you define more columns than necessary? If you just want extra space you can get that using: \begin{tabular}{|@{\hspace{1em}}p{5in}@{\hspace{1em}}|}
    – Skillmon
    Mar 8, 2017 at 18:32
  • @Skillmon You are quite right, except that in this case doing that results in the top cell having white strips on both sides. Where it should be black.
    – Dan
    Mar 8, 2017 at 18:33
  • I just realised that. There might be a hacky way to get those, though :)
    – Skillmon
    Mar 8, 2017 at 18:45

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