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📜  css 手风琴三角形 - CSS 代码示例

📅  最后修改于: 2022-03-11 14:47:54.994000             🧑  作者: Mango

代码示例1
.widget-accordion button::before {
  content: "▶︎ ";
}

.widget-accordion button[aria-expanded="true"]::before {
  content: "▼︎ ";
}