The CSS :before and :after pseudo-elements specify the location of content before and after an element’s document tree content. The content property, in conjunction with these pseudo-elements, specifies what is inserted.
What is the use of content property in CSS?
The content property in CSS is used to generate the content dynamically (during run time). It is used to generate content ::before & ::after pseudo element.
What is the use of before and after in CSS?
Definition and Usage
The ::before selector inserts something before the content of each selected element(s). Use the content property to specify the content to insert. Use the ::after selector to insert something after the content.
Which property is mandatory for after and before?
The content attribute
This property is used with the :before and :after pseudo-elements to generate content in a document. Values have the following meanings: none – The pseudo-element is not generated.
What is the purpose of the content pseudo element?
A CSS pseudo-element is used to style specified parts of an element. For example, it can be used to: Style the first letter, or line, of an element. Insert content before, or after, the content of an element.
What is the use of before in CSS?
In CSS, ::before creates a pseudo-element that is the first child of the selected element. It is often used to add cosmetic content to an element with the content property. It is inline by default.
How does content work in CSS?
The content CSS property replaces an element with a generated value. Objects inserted using the content property are anonymous replaced elements.
What does * represent in CSS?
This is a common technique called a CSS reset. Different browsers use different default margins, causing sites to look different by margins. The * means “all elements” (a universal selector), so we are setting all elements to have zero margins, and zero padding, thus making them look the same in all browsers.
How do you transform CSS?
The transform property applies a 2D or 3D transformation to an element. This property allows you to rotate, scale, move, skew, etc., elements. To better understand the transform property, view a demo.
What does :: After mean in HTML?
In CSS, ::after creates a pseudo-element that is the last child of the selected element. It is often used to add cosmetic content to an element with the content property. It is inline by default.
What can you use to keep an element in the same spot in a browser window even if the user scrolls down?
Fixed positioning is really just a specialized form of absolute positioning; elements with fixed positioning are fixed relative to the viewport/browser window rather than the containing element; even if the page is scrolled, they stay in exactly the same position inside the browser window.
Can we align a block element by setting the left and right margins?
Block elements can be aligned by setting the left and right margins to “align” with the margin: auto; property we can align the block level elements into the centre. block-level element occupies the entire space of its parent element.
What is a pseudo-element and why would you use one?
A CSS pseudo-element is a keyword added to a selector that lets you style a specific part of the selected element(s). For example, ::first-line can be used to change the font of the first line of a paragraph.
What is difference between pseudo-class and pseudo-element?
Can a pseudo-element have a pseudo-element?
Only one pseudo-element may appear per selector, and if present it must appear after the sequence of simple selectors that represents the subjects of the selector. Note: A future version of this specification may allow multiple pseudo-elements per selector.