May I ask how the download icon of the NetEYun music web version is made? As shown in the picture

the NetEYun music multi-end download on the left side of the picture checks how the element can"t see the icon, and finds an interesting, red-circled text-indent set to-9999px. Thank you!

sample URL https://music.163.com/-sharp/playl.

Mar.30,2021

1. Where did the picture come from?

aul

2. What's the use of this-9999px? I can only rely on the usual function of-9999 to guess why NetEase is doing it here-9999

.
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-9999seo
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