1 circle {

     2   fill: rgb(31, 119, 180);

     3   fill-opacity: .25;

     4   stroke: rgb(31, 119, 180);

     5   stroke-width: 1px;

     6 }

     7 

     8 .leaf circle {

     9   fill: #ff7f0e;

    10   fill-opacity: 1;

    11 }

    12 

    13 text {

    14   font: 10px sans-serif;

    15 }