What is em in width CSS?

The em is simply the font size. In an element with a 2in font, 1em thus means 2in. Expressing sizes, such as margins and paddings, in em means they are related to the font size, and if the user has a big font (e.g., on a big screen) or a small font (e.g., on a handheld device), the sizes will be in proportion.

What does em stand for CSS?

It means “emphemeral unit” which is relative to the current font size. For example, if the current font size was set to 16px, then the bottom padding would be set to 160px.

What is em and VH in CSS?

Relative Units EM: Relative to the parent element. REM: Relative to the root element (HTML tag) %: Relative to the parent element. VW: Relative to the viewport’s width. VH: Relative to the viewport’s height.

What does 100vh mean in CSS?

100% of the viewport height
height: 100vh = 100% of the viewport height. Technically, this is true, but a better way to think of it is = 100% of the available height. If you are looking to fill up a div with the available height, that’s a mighty useful trick.

What is em tag in HTML?

: The Emphasis element. The HTML element marks text that has stress emphasis. The element can be nested, with each level of nesting indicating a greater degree of emphasis.

Is 100% same as 100vh?

For example, height: 100%; applied to an element is relative to the size of its parent. In contrast, height: 100vh will be 100% of the viewport height regardless of where the element resides in the DOM.

What is VH and VW in CSS?

The allowed units are: vw : hundredths of the viewport width. vh : hundredths of the viewport height. vmin : hundredths of whichever is smaller, the viewport width or height. vmax : hundredths of whichever is larger, the viewport width or height.

What is px em REM in CSS?

em – It is used to set the relative size. It is relative to the font-size of the element. Note: Here 2em meaning 2times the size of current font. rem – Relative to the browser base font-size. px – It defines the font-size in terms of pixels. (