CSSselectorfirst-child

CSSselector::first-child:Matcheselementswithnoparent.Usage%of...CSS2.1selectors.-REC.BasicCSSselectorsincluding:*(universal ...,The:first-childselectorisusedtoselectthespecifiedselector,onlyifitisthefirstchildofitsparent.,The:first-of-typeselectormatcheseveryelementthatisthefirstchild,ofaparticulartype,ofitsparent.Tip:Thisisthesameas:nth-of-type(1).,2010年4月26日—Selectorslevel3introducesa:fir...

參考資訊如下
"first-child"

CSS selector: :first-child : Matches elements with no parent. Usage % of ... CSS 2.1 selectors. - REC. Basic CSS selectors including: * (universal ...

CSS :first

The :first-child selector is used to select the specified selector, only if it is the first child of its parent.

CSS :first-of

The :first-of-type selector matches every element that is the first child, of a particular type, of its parent. Tip: This is the same as :nth-of-type(1).

CSS selector for first element with class

2010年4月26日 — Selectors level 3 introduces a :first-of-type pseudo-class, which represents the first element among siblings of its element type. This answer ...

first-child - CSS: Cascading Style Sheets

2023年2月20日 — The :first-child CSS pseudo-class represents the first element among a group of sibling elements. Try it. CSS Demo: :first-child. Reset.

first-child

2015年3月27日 — The :first-child selector allows you to target the first element immediately inside another element. It is defined in the CSS Selectors ...

first-child

2023年11月1日 — The CSS :first-child selector is a powerful tool that enables you to style or modify the first child element within a parent container. This ...

first-of

2019年11月11日 — The :first-of-type selector in CSS allows you to target the first occurence of an element within its container. It is defined in the CSS ...

What is first child in CSS

2023年5月4日 — The first-child is a pseudo-class in CSS that represents the first element among a group of sibling elements. The:first-child Selector is used ...

What is the first

The first child in CSS is a selector in CSS, that basically searches for the very first child element of the parent element, and it is widely used in CSS, for ...