I found these pretty boxes on texample.net:
\documentclass{article}
\usepackage{tikz}
\usetikzlibrary{shapes,snakes}
\usepackage{amsmath,amssymb}
\begin{document}
%
% Define box and box title style
\tikzstyle{mybox} = [draw=red, fill=blue!20, very thick,
rectangle, rounded corners, inner sep=10pt, inner ysep=20pt]
\tikzstyle{fancytitle} =[fill=red, text=white]
%
%
\begin{tikzpicture}
\node [mybox] (box){%
\begin{minipage}{0.50\textwidth}
To calculate the horizontal position the kinematic differential
equations are needed:
\begin{align}
\dot{n} &= u\cos\psi -v\sin\psi \\
\dot{e} &= u\sin\psi + v\cos\psi
\end{align}
For small angles the following approximation can be used:
\begin{align}
\dot{n} &= u -v\delta_\psi \\
\dot{e} &= u\delta_\psi + v
\end{align}
\end{minipage}
};
\node[fancytitle, right=10pt] at (box.north west) {A fancy title};
\node[fancytitle, rounded corners] at (box.east) {$\clubsuit$};
\end{tikzpicture}%
%
\tikzstyle{mybox} = [draw=blue, fill=green!20, very thick,
rectangle, rounded corners, inner sep=10pt, inner ysep=20pt]
\tikzstyle{fancytitle} =[fill=blue, text=white, ellipse]
%
\begin{tikzpicture}[transform shape, rotate=10, baseline=-3.5cm]
\node [mybox] (box) {%
\begin{minipage}[t!]{0.5\textwidth}
Fermat's Last Theorem states that
\[
x^n + y^n = z^n
\]
has no non-zero integer solutions for $x$, $y$ and $z$ when $n > 2$.
\end{minipage}
};
\node[fancytitle] at (box.north) {Fermat's Last Theorem};
\end{tikzpicture}
%
\end{document}
I tried to do something like this:
I want the boxes to stay in the cornes of the page while the molecule stays in the center of the page. But I can't figure out how to manage this. What I got until now, is this:
\documentclass[12pt]{scrartcl}
\usepackage[T1]{fontenc}
\usepackage[utf8]{inputenc}
\usepackage[ngerman]{babel}
\usepackage{tikz}
\usetikzlibrary{shapes,decorations}
\usepackage{float}
\usepackage{chemfig}
\setdoublesep{0.357 em}
\setchemrel{0pt}{1.785 em}{2.785 em}
\setatomsep{1.785 em}
\setbondoffset{0.18265 em}
\setbondstyle{line width=0.0642}
\begin{document}
\tikzstyle{mybox} = [draw=black, fill=blue!20, very thick,
rectangle, rounded corners, inner sep=10pt, inner ysep=20pt]
\tikzstyle{fancytitle} =[fill=black, text=white]
%
\begin{tikzpicture}
\node [mybox] (box){%
\begin{minipage}{0.5\textwidth}
Hier werden die chemisch-physikalischen Eigenschaften gelistet sein.
\end{minipage}
};
\node[fancytitle, right=10pt] at (box.north west) {Physikalisch-chemische Eigenschaften};
\end{tikzpicture}
%
\tikzstyle{mybox} = [draw=blue, fill=green!20, very thick,
rectangle, rounded corners, inner sep=10pt, inner ysep=20pt]
\tikzstyle{fancytitle} =[fill=blue, text=white, ellipse]
%
\begin{tikzpicture}
\node [mybox] (box) {%
\begin{minipage}{0.5\textwidth}
Hier sollen die pharmakodynamischen Parameter stehen!
\end{minipage}
};
\node[fancytitle] at (box.north) {Pharmakodynamik};
\end{tikzpicture}
%
\begin{figure}[H]
\centering
\chemfig{*6(=(-[:-90]OH)-=-(-[:90]N(-[:150]H)-[:30](=O)-[:-30]CH_3)=-)}
\caption{Paracetamol}
\end{figure}
%
\tikzstyle{mybox} = [draw=black, fill=blue!20, very thick,
rectangle, rounded corners, inner sep=10pt, inner ysep=20pt]
\tikzstyle{fancytitle} =[fill=black, text=white]
%
\begin{tikzpicture}
\node [mybox] (box){%
\begin{minipage}{0.5\textwidth}
Hier werden die chemisch-physikalischen Eigenschaften gelistet sein.
\end{minipage}
};
\node[fancytitle, right=10pt] at (box.north west) {Physikalisch-chemische Eigenschaften};
\end{tikzpicture}
%
\tikzstyle{mybox} = [draw=blue, fill=green!20, very thick,
rectangle, rounded corners, inner sep=10pt, inner ysep=20pt]
\tikzstyle{fancytitle} =[fill=blue, text=white, ellipse]
%
\begin{tikzpicture}
\node [mybox] (box) {%
\begin{minipage}{0.5\textwidth}
Hier sollen die pharmakodynamischen Parameter stehen!
\end{minipage}
};
\node[fancytitle] at (box.north) {Pharmakodynamik};
\end{tikzpicture}
%
\end{document}
