1 body {

     2   font: 13px sans-serif;

     3 }

     4 

     5 #chart svg {

     6   width: 960px;

     7   height: 500px;

     8   border: solid 1px #ccc;

     9 }

    10 

    11 rect {

    12   fill: #fff;

    13 }

    14 

    15 circle, .line {

    16   fill: none;

    17   stroke: steelblue;

    18   stroke-width: 1.5px;

    19 }

    20 

    21 circle {

    22   fill: #fff;

    23   fill-opacity: .2;

    24   cursor: move;

    25 }

    26 

    27 circle.selected {

    28   fill: #ff7f0e;

    29   stroke: #ff7f0e;

    30 }