%%
%% The LaTeX Companion, 3ed
%%
%% Example 8-4-25 on page I-628 in "Turning the boxes into floats".
%%
%% Copyright (C) 2022 Frank Mittelbach
%%
%% It may be distributed and/or modified under the conditions
%% of the LaTeX Project Public License, either version 1.3c
%% of this license or (at your option) any later version.
%%
%% See https://www.latex-project.org/lppl.txt for details.
%%

\documentclass{tlc3exa}
\pagestyle{empty}
\setcounter{page}{6}
\setlength\textwidth{185.0pt}
% small headings for the example
\makeatletter
\renewcommand\section{\@startsection{section}{1}{\z@}%
                                    {-1.25ex \@plus-1ex \@minus-.2ex}%
                                    {.5ex}%
                                    {\normalfont\normalsize\bfseries}}
\makeatother

  \setlength\textfloatsep{.6\textfloatsep}

  \setcounter{section}{5}

%StartShownPreambleCommands
\usepackage{tcolorbox}
\tcbset{every float=\centering, % center floats
        floatplacement=tp}      % only top and
                                % page by default
%StopShownPreambleCommands

\begin{document}
\section{The \LaTeX\ logo}
A while back \LaTeX{} moved away from a lion
to a hummingbird designed by Paulo Cereda.

\tcbox[float=t,size=small,title=A new logo]
      {\includegraphics[width=.3\textwidth]
                       {latex-logo.pdf}}
\end{document}