1 \usepackage{tikz}

     2 \usepackage{pgf}

     3 \usetikzlibrary{positioning}

     4 \usetikzlibrary{calc}

     5 \usetikzlibrary{fit}

     6 \usepackage{graphicx} 

     7 \usepackage{pgfplots}

     8 

     9 

    10 \newenvironment{bubble}[1][]{%

    11 \addtolength{\leftmargini}{4mm}%

    12 \begin{tikzpicture}[baseline=(current bounding box.north)]%

    13 \draw (0,0) node[inner sep=2mm,fill=cream,ultra thick,draw=red,rounded corners=2mm]% 

    14 \bgroup\begin{minipage}{#1}\raggedright{}}

    15 {\end{minipage}\egroup;%

    16 \end{tikzpicture}\bigskip}