How can I make the ghost smiley glow?

Question

https://code.sololearn.com/Wp635762YkRa/?ref=app

Answer 1

Replace your face circle with this code:
<circle cx="50" cy="50" r="50" fill="black" stroke="black" stroke-width="2px">
<animate
attributeName="stroke"
from="black"
to="green"
dur="2s"
repeatCount="indefinite"
/>
</circle>

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Using the stroke around the circle you can animte it and give it a glow, now you can play with it and there is much more to improve :)

Answer 2

Thanks Uria