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  1. www.w3.org › Style › ExamplesCSS: em, px, pt, cm, in… - World Wide Web Consortium (W3C)

    • em, px, pt, cm, in… CSS offers a number of different units for expressing length. Some have their history in typography, such as point (pt) and pica (pc), others are known from everyday use, such as centimeter (cm) and inch (in).
    • Use em or px for font sizes. CSS inherited the units pt(point) and pc(pica) from typography. Printers have traditionally used those and similar units in preference to cmor in.
    • 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.
    • Site navigation. CSS home. Learn & use. Soft­ware. Par­tic­i­pate / drafts. Bert Bos, style activity lead. Copyright © 1994–2021 W3C Privacy policy. Created 12 Jan 2010;

  2. stackoverflow.com › questions › 4474107What is the em font-size unit? How much is it in pixels?

    Dec 14, 2021 · Basically 1em equals the inherited font-size on the current element. e.g. You can set font-size for your body element, and have all other elements use 'em' in their font-size and it will be relative to the size you set in the body. This is a nice way to make your fonts responsive (all you need to do is to change the size for your body once...)

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  4. www.w3schools.com › cssref › css_unitsCSS Units - W3Schools

    Learn about different units for expressing length in CSS, such as pixels, ems, rems, and viewports. See examples, browser support, and tips for using relative units.

  5. www.w3schools.com › css › css_font_sizeCSS Font Size - W3Schools

    Learn how to set the size of the text with CSS properties, such as pixels, em, percent and vw. 1em is equal to the current font size, which is 16px by default in browsers.

  6. www.freecodecamp.org › news › css-unit-guideCSS Unit Guide: CSS em, rem, vh, vw, and more, Explained

    Feb 3, 2020 · Learn how to use different units of length and size in CSS, such as pixels, centimeters, ems, rems, and viewports. Find out how they are calculated, inherited, and affected by fonts and devices.

  7. devdevout.com › css › emCSS Em: Understanding and Using em Units - Dev Devout

    Feb 17, 2023 · Learn how to use em units in CSS to create flexible and accessible web designs that adapt to different screen sizes and devices. Em units are based on the font size of the parent element and can be used for paddings and margins, but have some limitations and disadvantages.

  8. makersaid.com › what-is-em-cssWhat Is the Em Unit in CSS? - Maker's Aid

    Aug 11, 2022 · Learn how to use em, a relative unit for the size of a CSS property based on that of its parent. See examples of em units for font-size and other properties, and how they differ from fixed units.