# Tcolorbox: Margin between upper and lower part

Which option controls the vertical spacing between upper and lower part inside the box?

\documentclass{article}
\usepackage{tcolorbox}

\begin{document}

\begin{tcolorbox}
This is another \textbf{tcolorbox}.
\tcblower
This is the lower part of the box.
\end{tcolorbox}

\end{document}


Page 11 of the tcolorbox documentation has a useful overview of the lengths:

This means you want to change the middle key:

\documentclass{article}
\usepackage{tcolorbox}

\begin{document}

\begin{tcolorbox}[middle=10pt]
This is another \textbf{tcolorbox}.
\tcblower
This is the lower part of the box.
\end{tcolorbox}

\end{document}

• I did check the manual, but I was searching for the wrong term. – blackened May 4 at 12:15