htl.html`
<svg width="1000" height="300">
<circle cx="100" cy="100" r="50" fill="blue"></circle>
<circle cx="300" cy="100" r="50" fill="green"></circle>
<circle cx="500" cy="100" r="50" fill="red"></circle>
</svg>
<script>
var selection_3 = d3.selectAll("circle")
selection_3.style("fill", "green")
selection_3.style("stroke", "black")
selection_3.attr("r", 70)
selection_3.style("stroke-width", "5px");
</script>
`