8 CSS pseudo classes most likely you are not familiar with

https://abs.twimg.com/emoji/v2/... draggable="false" alt="🧵" title="Thread" aria-label="Emoji: Thread"> https://abs.twimg.com/emoji/v2/... draggable="false" alt="👇🏻" title="Rückhand Zeigefinger nach unten (heller Hautton)" aria-label="Emoji: Rückhand Zeigefinger nach unten (heller Hautton)">

https://abs.twimg.com/emoji/v2/... draggable="false" alt="1️⃣" title="Tastenkappe Ziffer 1" aria-label="Emoji: Tastenkappe Ziffer 1"> :autofill

- The :autofill CSS pseudo-class matches when an <input> element has its value autofilled by the browser

See this in action here https://codepen.io/prathamkumar/pen/BapYOaz">https://codepen.io/prathamku...

https://abs.twimg.com/emoji/v2/... draggable="false" alt="2️⃣" title="Tastenkappe Ziffer 2" aria-label="Emoji: Tastenkappe Ziffer 2"> :empty

- The :empty CSS pseudo-class represents any element that has no children.

https://abs.twimg.com/emoji/v2/... draggable="false" alt="3️⃣" title="Tastenkappe Ziffer 3" aria-label="Emoji: Tastenkappe Ziffer 3"> :picture-in-picture

- The :picture-in-picture CSS pseudo-class matches the element which is currently in picture-in-picture mode.

For example, picture-in-picture mode of videos

https://abs.twimg.com/emoji/v2/... draggable="false" alt="4️⃣" title="Tastenkappe Ziffer 4" aria-label="Emoji: Tastenkappe Ziffer 4"> :indeterminate

- The :indeterminate CSS pseudo-class represents any form element whose state is indeterminate, such as checkboxes which have their HTML indeterminate attribute set to true

https://abs.twimg.com/emoji/v2/... draggable="false" alt="5️⃣" title="Tastenkappe Ziffer 5" aria-label="Emoji: Tastenkappe Ziffer 5"> :playing

- The :playing CSS pseudo-class selector is a resource state pseudo-class that will match an audio, video, or similar resource that is capable of being “played” or “paused”, when that element is “playing”.

https://abs.twimg.com/emoji/v2/... draggable="false" alt="6️⃣" title="Tastenkappe Ziffer 6" aria-label="Emoji: Tastenkappe Ziffer 6"> :paused

Similarly, the :paused CSS pseudo-class selector is a resource state pseudo-class that will match an audio or video when that element is “paused”.

P.S. playing and paused are currenly is experiment. They are not standardized yet

https://abs.twimg.com/emoji/v2/... draggable="false" alt="7️⃣" title="Tastenkappe Ziffer 7" aria-label="Emoji: Tastenkappe Ziffer 7"> :right

- The :right CSS pseudo-class, used with the @page at-rule, represents all right-hand pages of a printed document.

https://abs.twimg.com/emoji/v2/... draggable="false" alt="8️⃣" title="Tastenkappe Ziffer 8" aria-label="Emoji: Tastenkappe Ziffer 8"> Similarly, :left pseudo-class for left-hand pages