# How to place a title in the tcolorbox to the bottom (left right) of the box

The question is how to place a title in the tcolorbox to the bottom left/right of the box. I want to create something like the following picture. The main point here is the caption "My picture box" being in the bottom of the box.

Using the attach boxed title to bottom center key (along with minipage boxed title* to compensate the different width) you can easily achieve what you want:

The code:

\documentclass{article}
\usepackage[many]{tcolorbox}
\usepackage{lipsum}

\newtcolorbox{mybox}[2][]{
enhanced,
arc=0pt,
outer arc=0pt,
minipage boxed title*=-1.95em,
title=#2,
fonttitle=\sffamily,
watermark opacity=0.25,
watermark stretch=1.00,
watermark graphics=lichtspiel.jpg,
attach boxed title to bottom center={yshift=2pt},
boxed title style={
enhanced,
watermark opacity=0.75,
watermark stretch=1.00,
watermark graphics=lichtspiel.jpg,
arc=0pt,
outer arc=0pt,
},
#1
}

\begin{document}

\begin{mybox}{This is the title}
\lipsum[4]
\end{mybox}

\end{document}


tcolorbox offers many positions for placing title, see manual page 112,section 8.2.

\documentclass{article}
\usepackage[many]{tcolorbox}
\begin{document}
\begin{tcolorbox}[enhanced,minipage boxed title,enhanced,title=My title comes here at the bottom,
attach boxed title to bottom left=
{xshift=0mm,yshift=1mm},
boxed title style={size=small,colback=blue},width=5in]
This is a \textbf{tcolorbox}.
\end{tcolorbox}
\end{document}


However, these predefined styles do not meet your specifications in the provided picture in the question. For this you may use the flexibility of tcolorbox and use a node.

\documentclass{article}
\usepackage{lipsum}
\usepackage[many]{tcolorbox}
\makeatletter
\newtcolorbox{mybox}[2][]{enhanced jigsaw,
boxsep=0pt,bottom=3mm,left=3mm,right=3mm,top=3mm,boxrule=1pt,colframe=red,arc=0pt,
overlay={%
\node[anchor=north,text width=\tcb@width-4\pgflinewidth-6mm,fill=olive,inner xsep=3mm]
(a) at ([yshift=2mm]frame.south) {#2};
\draw[red,line width=1pt] (a.north west) -- (a.south west) -| (a.north east);
},
#1}
\makeatother
\begin{document}
\begin{mybox}{My title My title My title My title My title My title My title My title My title}
\lipsum[2]
\end{mybox}
\end{document}