Some $\LaTeX$ code to start the week

Well, we’re back from the bank holiday weekend, I’m writing up a short note in $\LaTeX$ for a project I want to work on in the future, and I want to write a small callout in a similar way to how one would in Quarto. Anyway, I quite like the pandoc-esque style of callout that’s implemented in Quarto, and since for this note I’m using Overleaf I figured I would spend a few minutes re-implementing it. Here it is. In the preamble:

% packages required 
\usepackage{tcolorbox} % for the base `tcolorbox` environment
\usepackage{xcolor}    % for colours
\tcbuselibrary{skins}  % in order to use the `enhanced` and `overlay` features

% custom calloutbox definition
\newtcolorbox{mycalloutbox}[1]{%
  enhanced,                                   % for the fancy drawing code
  colback=white,                              % no background color
  colframe=white,                             % no visible frame
  coltitle=gray,                              % title colour
  coltext=gray,                               % title colour
  overlay={\draw[gray, line width=1pt] 
    (frame.south west)--(frame.north west);}, % thin vertical line on the left
  fonttitle=\bfseries\sffamily,               % sans serif title
  title={#1}                                  % custom title
}

And in the main body:

\begin{mycalloutbox}{This is my title}
%
And this is my content.
%
\end{mycalloutbox}

Enjoy!

Citation

BibTeX citation:

@online{mclatchie2025,
  author = {Yann McLatchie},
  title = {A Custom Callout Block in {\$\textbackslash LaTeX\$}},
  date = {2025-05-06},
  url = {https://yannmclatchie.github.io/blog/posts/callouts},
  langid = {en}
}

For attribution, please cite this work as:

Yann McLatchie. 2025. “A Custom Callout Block in $\LaTeX$.” May 6, 2025. https://yannmclatchie.github.io/blog/posts/callouts.

A custom callout block in \(\LaTeX\)

Some \(\LaTeX\) code to start the week

Citation