What is EM in HTML CSS?

What is EM in HTML CSS?

The em is simply the font size. In an element with a 2in font, 1em thus means 2in. Declarations such as text-indent: 1.5em and margin: 1em are extremely common in CSS. The ex unit is rarely used. Its purpose is to express sizes that must be related to the x-height of a font.

What is the comment symbol in CSS?

How to Comment in CSS. To comment in CSS, simply place your plain text inside /* */ marks. This tells the browser that they are notes and should not be rendered on the front end.

What is comment line in CSS?

A CSS comment is used to add explanatory notes to the code or to prevent the browser from interpreting specific parts of the style sheet. By design, comments have no effect on the layout of a document.

What is the comment tag?

The HTML comment tag is used to add text to an HTML document without including that text in the Web page. This comment will, however, be passed in the HTML file sent to the browser, and can be seen by viewing the page source (View Source). …

What are selectors used for?

In CSS, selectors are used to target the HTML elements on our web pages that we want to style. There are a wide variety of CSS selectors available, allowing for fine-grained precision when selecting elements to style.

How do inserting a comment in HTML document?

To write HTML comments put — and —> at either end of the comment. HTML comments are notes to keep HTML code organized and are ignored by the browser.

What defines a comment in HTML?

Comments are some text or code written in your code to give an explanation about the code, and not visible to the user. Comments which are used for HTML file are known as HTML comments. Anything written between these tags will be ignored by the browser, so comments will not be visible on the webpage.

Should you use em or px?

Use em only for sizing that needs to scale based on the font size of an element other than the html (root) element. Use rem unit for elements that scale depending on a user’s browser font size settings. Use rem as the unit for most of your property value. For complex layout arrangement, use percentage (%).

What is a CSS comment and how to use it?

Jump to: A CSS comment is used to add explanatory notes to the code or to prevent the browser from interpreting specific parts of the style sheet. By design, comments have no effect on the layout of a document.

What is the difference between EM and REM in CSS?

More units in CSS. To make it even easier to write style rules that depend only on the default font size, CSS has since 2013 a new unit: the rem. The rem (for “root em”) is the font size of the root element of the document. Unlike the em, which may be different for each element, the rem is constant

What is the difference between EM and ex units in CSS?

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. Declarations such as text-indent: 1.5em and margin: 1em are extremely common in CSS. The ex unit is rarely used.