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                企業??AI智能體構建引擎,智能編排和調試,一鍵部署,支持知識庫和私有化部署方案 廣告
                在這里,極有可能顛覆每個人對書寫 CSS 規則集的認知(根據眾多規范整理而成,包括[CSS Guidelines](http://cssguidelin.es/#anatomy-of-a-ruleset)): * 相關聯的選擇器寫在同一行;不相關聯選擇器分行書寫; * 最后一個選擇器和左開大括號(`{`)中間書寫一個空格; * 每個聲明單獨一行; * 冒號(`:`)后添加空格; * 所有聲明的尾部都添加一個分號 (`;`); * 右閉大括號(`}`)單獨一行; * 右閉大括號(`}`)添加空行。 示例: ~~~ // Yep .foo, .foo-bar, .baz { display: block; overflow: hidden; margin: 0 auto; } // Nope .foo, .foo-bar, .baz { display: block; overflow: hidden; margin: 0 auto } ~~~ 添加與 CSS 相關的規范時,我們需要注意: * 本地變量在其他任何變量之前聲明,并和其他聲明用空行分隔開; * 不需?`@content`?的混合宏在放在其他聲明之前; * 嵌套選擇器在新行聲明; * 需要?`@content`?的混合宏在嵌套選擇器后聲明; * 右閉大括號(`}`)上一行無需空行; 示例: ~~~ .foo, .foo-bar, .baz { $length: 42em; @include ellipsis; @include size($length); display: block; overflow: hidden; margin: 0 auto; &:hover { color: red; } @include respond-to('small') { overflow: visible; } } ~~~ ## 擴展閱讀 * [Anatomy of a Ruleset](http://cssguidelin.es/#anatomy-of-a-ruleset)
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