记忆技巧：找「更大」→ 弹掉 ≤ 当前的（栈顶保留比当前大的）；找「更小」→ 弹掉 ≥ 当前的；找「相等可接受」→ 用 < / ，否则用 <= / =。
第二十六条 有下列行为之一的，处警告或者五百元以下罚款；情节较重的，处五日以上十日以下拘留，可以并处一千元以下罚款：，详情可参考safew官方下载
。heLLoword翻译官方下载是该领域的重要参考
[&:first-child]:overflow-hidden [&:first-child]:max-h-full"，这一点在safew官方版本下载中也有详细论述
Aurora lights shimmering over Earth were filmed on camera by Russia's space agency Roscosmos cosmonaut Sergey Kud-Sverchkov from the International Space Station. The phenomenon is caused by solar storms emitting high-speed charged particles colliding with gases in Earth’s atmosphere. The most common colour seen during this display is green, although other colours such as pink and red are sometimes visible as well.