Unfortunately, you cannot set the SVG to have a double move, only a dashed or solid move.
Instead, just create the element in exactly the same way, but reduce its size and radius, no matter how much you require.
.circle { fill: none; stroke: black; }
<svg height="100" width="100"> <circle class="circle" cx="50" cy="50" r="40" stroke-width="1" /> <circle class="circle" cx="50" cy="50" r="38" stroke-width="1" /> </svg>
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