position:fixed - 99.9% position:absolute - 100%, looks like bug

[SkyHolder]

meet this bug before, here example for target 164

100%
<i><i><i><i c><style>body{background:#66284A}i i{rotate:90deg;margin:-50 35;--c:#D669EC}i i i{--c:FDFBF8}[c]{--c:D86F45}i{position:absolute;border:20px solid;padding:30;border-radius:9cm;border-bottom-color:#0000;rotate:45deg;margin:32 142;color:var(--c,F0CD48)}

99%
<i><i><i><i c><style>body{background:#66284A}i i{rotate:90deg;margin:-50 35;--c:#D669EC}i i i{--c:FDFBF8}[c]{--c:D86F45}i{position:fixed;border:20px solid;padding:30;border-radius:9cm;border-bottom-color:#0000;rotate:45deg;margin:32 142;color:var(--c,F0CD48)}

[chinchang]

Well...this would be more on browser's rendering part. What CSSBattle does is just matching pixels of your solution to actual target.