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<!DOCTYPE html>
<style>
body {
margin: 0;
}
.container {
padding: 30px;
}
.target {
width: 100px;
height: 100px;
position: relative;
}
</style>
<div class="container">
<!-- Circle with 9px double red outline around 50px radius circle -->
<!-- Double outline: 3px stroke at outer edge, 3px stroke at inner edge, 3px gap in between -->
<div class="target">
<svg width="130" height="130" style="position: absolute; left: -15px; top: -15px;">
<!-- Background fill: circle at center with 50px radius -->
<circle cx="65" cy="65" r="50" fill="lightblue"/>
<!-- Outer stroke: at radius 50 + 9 - 1.5 = 57.5 with stroke-width 3 -->
<circle cx="65" cy="65" r="57.5" fill="none" stroke="red" stroke-width="3"/>
<!-- Inner stroke: at radius 50 + 1.5 = 51.5 with stroke-width 3 -->
<circle cx="65" cy="65" r="51.5" fill="none" stroke="red" stroke-width="3"/>
</svg>
</div>
</div>