DNA Helix Loader
A pure CSS loading spinner. The full source is available at CodePen: https://codepen.io/agrimsrud/pen/MBmzja
(Oh, and I wasn't aware of Jane Mengtian Z's version until after this was uploaded. I guess I ended up a bit too close to hers, although no intention to rip this off. See hers at: https://dribbble.com/shots/3865929-Helix)
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