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<!doctype html>
<html>
<title>CSS outline (ref)</title>
<link rel="stylesheet" href="/fonts/ahem.css"/>
<style>
body { margin: 0; padding: 0; }
</style>
<svg height=500>
<rect x="8" y="8" width="24" height="24" fill="blue"/>
<rect x="10" y="10" width="20" height="20" fill="green"/>
<rect x="7.5" y="47.5" width="25" height="25" fill="none" stroke="blue"/>
<rect x="10" y="50" width="20" height="20" fill="green"/>
<text id="text" font-family="Ahem" font-size="100px" x="10" y="200">X</text>
<script>
const floatBounds = text.getBBox();
const bounds = {
x : Math.round(floatBounds.x),
y : Math.round(floatBounds.y),
width : Math.round(floatBounds.width),
height : Math.round(floatBounds.height)
};
const outline = document.createElementNS("http://www.w3.org/2000/svg", "rect");
outline.setAttribute("x", bounds.x - 1);
outline.setAttribute("y", bounds.y - 1);
outline.setAttribute("width", bounds.width + 2);
outline.setAttribute("height", bounds.height + 2);
outline.setAttribute("fill", "none");
outline.setAttribute("stroke", "blue");
outline.setAttribute("stroke-width", "2");
text.parentNode.insertBefore(outline, text);
</script>
</svg>
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