How to make a tcolorbox with only a left side rule?

Question

I'm doing this:

\documentclass{article}
\usepackage[most]{tcolorbox}
\begin{document}
\begin{tcolorbox}[colframe=red,frame empty,leftrule=1pt]
Hello, world!
\end{tcolorbox}
\end{document}

Obviously, this doesn't work. But I can't understand, what is the right combination of options so that only the left rule is visible, while all others are hidden.

BTW, if I remove frame empty and set rightrule=0pt and so on, I still see a thin border around the box, as explained here.

https://tex.stackexchange.com/questions/512501/create-a-box-using-the-tcolorbox-package-or-any-o — js bibra, Sep 24 '21 at 13:46
Does this answer your question? Create a box using the tcolorbox package or any other? (image) — user202729, Dec 26 '21 at 01:34

score 6 · Accepted Answer · answered Sep 24 '21 at 12:48

6

\documentclass{article}
\usepackage[most]{tcolorbox}
\begin{document}
\begin{tcolorbox}[boxrule=0pt,frame hidden,sharp corners,enhanced,borderline west={1pt}{0pt}{red}]
Hello, world!
\end{tcolorbox}
\end{document}

answered Sep 24 '21 at 12:48

Ulrike Fischer

327,261

1

Thanks! Maybe you know how to remove the background color too? – yegor256 Sep 24 '21 at 14:51
2

interior hidden. – Ulrike Fischer Sep 24 '21 at 15:04

How to make a tcolorbox with only a left side rule?

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