This is used to matches the portion of an element that is selected by a user then apply the CSS rule in the selected content. background properties color properties cursor properties outline properties Ex: – p::selection { background-color: red; } ::before- This is used to insert somethi...
DOCTYPE html>h1::before{content:url(smiley.gif);}This is a headingThe ::before pseudo-element inserts content before the content of an element.This is a heading CSS - The ::after Pseudo-element The::afterpseudo-element can be used to insert some content after the content of an element. ...
The single-colon syntax was used for both pseudo-classes and pseudo-elements in CSS2 and CSS1. For backward compatibility, the single-colon syntax is acceptable for CSS2 and CSS1 pseudo-elements. The ::first-letter Pseudo-element The::first-letterpseudo-element is used to add a special styl...
CSS 教程 CSS 伪元素 (Pseudo-elements)CSS 伪元素用于向某些选择器设置特殊效果。语法 伪元素的语法: selector:pseudo-element {property:value;} CSS 类也可以与伪元素配合使用: selector.class:pseudo-element {property:value;}:first-line 伪元素 "first-line" 伪元素用于向文本的首行设置特殊样式。 在下面...
css类也可以与伪元素配合使用: select.class:pseudo-element{property:value;} :first-line伪元素, "first-line"伪元素用于向文本的首行设置特殊样式, p:first-line{ color:#ff0000; font-variant:small-caps; } 注释:"first-line"伪元素只能用于块级元素. ...
A CSS pseudo-element is a keyword added to a selector that lets you style a specific part of the selected element(s).
The single-colon syntax was used for both pseudo-classes and pseudo-elements in CSS2 and CSS1. For backward compatibility, the single-colon syntax is acceptable for CSS2 and CSS1 pseudo-elements. The ::first-letter Pseudo-element The::first-letterpseudo-element is used to add a special styl...
A pseudo-element in CSS, is used to style a specific part of an element that are not the part of the DOM (Document Object Model) and do not exist in the HTML markup. For Example first letter of a paragraph, placeholder text inside input element or selected part in a document. ...
A pseudo-element in CSS, is used to style a specific part of an element that are not the part of the DOM (Document Object Model) and do not exist in the HTML markup. For Example first letter of a paragraph, placeholder text inside input element or selected part in a document. ...
How about showing a custom placeholder instead? You can pull this off using::beforeand::afterwith a bit of CSS positioning. First, we need to use relative positioning on the image element. We are going to use absolute positioning on one of the pseudo-elements in a bit, so thisrelativepos...