I have the following custom environment setup:



\newtcolorbox{titlebox}[5]{enhanced,center,colframe=black,colback=white,boxrule={#3},arc={#2},auto outer arc,%
 breakable,pad at break*=5pt,vfill before first,before={\par\medskip\noindent},after={\par\medskip},top=12pt,left=4pt,%
 enlarge top by=7pt,%enlarge bottom by=7pt,%
 title={\rule[-.3\baselineskip]{0pt}{\baselineskip}\normalsize\sffamily\bfseries #1}, varwidth boxed title*=-30pt,
 attach boxed title to top left={yshift=-10pt,xshift=10pt}, coltitle=black,
 boxed title style={colback=white,boxrule={#5},arc={#4},auto outer arc}
 \begin{small}\begin{titlebox}{{\normalfont \textbf{Experiment}} \normalfont #1}{2.5pt}{1pt}{3.5pt}{1pt}}

Left text & Right Text

The problem is that I want to modify my environment in such a way that it splits the box horizontally into two halves of equal size, and on the left of both sides I want to have the text "Experiment" followed by the given input. I also want to be able to write on both sides of the divided box somehow. Optionally, there should be a vertical bar where the division of the box into two parts happens. Any ideas how to do that? Something along these lines (so the current box kind of replicated to have two parts):

enter image description here


1 Answer 1


You could use the same approach as in https://tex.stackexchange.com/a/433142/36296 and use subtitles:


    colback = white,
    colframe = black,
    before upper = \tcbsubtitle{\tikz{\node[draw=black,fill=white,thick,rounded corners,font=\bfseries\color{black}]{Experiment #1};}},
    before lower = \tcbsubtitle{\tikz{\node[draw=black,fill=white,thick,rounded corners,font=\bfseries\color{black}]{Experiment #2};}},
    subtitle style = {
      interior hidden,
      frame hidden,
    sidebyside align = top,
    segmentation style = {solid,line width=2pt}




enter image description here

  • Thanks. Can I somehow make the dashed line solid like the border or just remove it?
    – pixel
    May 30, 2023 at 17:11
  • 1
    @pixel The tcolorbox documentation has example how to change the line style. Search for segmentation style May 30, 2023 at 18:33
  • Adding something like segmentation style=solid at the end of your newtcolorbox does not do anything.
    – pixel
    May 31, 2023 at 9:49
  • @pixel See my updated answer May 31, 2023 at 9:55
  • Thanks, it works nicely now. One final question, it it possible to push subtitles and start of the text a bit to the left? More precisely, to change the margins from top bottom and down?
    – pixel
    May 31, 2023 at 10:18

You must log in to answer this question.

Not the answer you're looking for? Browse other questions tagged .