'Yields a string of CSS for <div id="graph">.'

@property
def style(self):

    return ('body    {    font:    11px    sans-serif;    }\na    {    color:    dodgerblue;    }\n#%s    canvas    {    }\n#%s    .node-label    {    font-size:    11px;    }\n#%s    {\n DCTB display:    inline-block;\n DCTB position:    relative;\n DCTB overflow:    hidden;\n DCTB border:    1px    solid    #ccc;\n}' % (self.id, self.id, self.id))
