3 Set 2012 Tenha como exemplo esse HTML:

Um título Já pensaram nisso e fizeram uma unidade chamada REM. A REM sempre terá o 

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The rem unit is the root em. It is relative to the default font-size of the root element of the HTML document. So, if the font size of the root element is 18px, then 1rem = 18px which will be same for all the elements which are defined with rem unit.

Относительно экрана: vw, vh, vmin, vmax Во всех современных браузерах, исключая IE8-, поддерживаются новые единицы из черновика стандарта CSS Values and Units 3 : We can use 4 units to specify font-size, px, %, em and newly added rem. The em and rem where bit confusing for me. In this blog post I like to discuss the difference between em and rem which @shidhin taught me. แล้ว rem ละ?

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With rem , all font sizes are relative to the root element (aka, the html tag). Length is a combination of a number and unit with no whitespace. E.g. 5px, 0.9em etc. Length Common Length units. There are several units used by CSS to express length. The older ones, supported by all browsers, are: rem - “r” stands for “root”: “root em” -, which is equal to the font size fixed to the root element (almost always CSS inherited the units pt (point) and pc (pica) from typography.

20 Jul 2016 rem units. Similar to em units, except it's based on the “root's em”, more specifically the tag's font-size. So if we set: html { font-size: 14px; }.

If the font-size of root html element is 16px i.e.:root { font-size: 16px; } then. 1rem = 16px for all the elements.

The rem unit is the root em. It is relative to the default font-size of the root element of the HTML document. So, if the font size of the root element is 18px, then 1rem = 18px which will be same for all the elements which are defined with rem unit.

Rem unit html

If the font-size of root html element is 16px i.e.:root { font-size: 16px; } then.

How to modify the relative calculation relationship between REM and PX. We can modify font size: 32px in the HTML tag (because the HTML node is the root node, that is, R: root in REM), so that 1rem
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Rem unit html

And by a root element, we're referring to the HTML element.

Learn HTML & CSS Correctly; Common CSS Units - (rem) Common CSS Units - (rem) Learning how 'rem' unit works in CSS and when to use it. FREELevel: Beginner2:39 mins rem - “r” stands for “root”: “root em” -, which is equal to the font size fixed to the root element (almost always ). vh and vw - Many responsive web design techniques rely heavily on percentage rules.
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I use font-size in rem in my theme, what do I do? The font-size in rem is relative to the font-size of the root element. So you can go to the Settingspage of this 

} .post{. font-size : 20px ;. } .post div{. font-size  19 May 2013 By definition, the REM unit is: "Equal to the computed value of 'font-size' on the root element.


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By using rem/vh/vw units over pixels. By using max-width/max-height. Using CSS Media Queries. Setting up the viewport. This tutorial will cover the use of CSS size units to make a responsive website. We will see other ways of responsive design in further tutorials. So, let's start our discussion on CSS size units.

This means that 1rem equals the font size of the html element (which for most browsers has a default Using the font percentage on HTML was a bit hacky due to the variance of em units, but with rem it makes extremely easy to do reliable padding & margins relative to the user’s font setting. From the Mozilla docs on rem units , ‘This unit is practical in creating perfectly scalable layout.’ , which is exactly how I use it. CSS Values and Units Module Level 3http://www.w3.org/TR/2013/CR-css3-values-20130730/Font sizing with Remhttp://snook.ca/archives/html_and_css/font-size-with Se hela listan på developer.mozilla.org Единица rem не поддерживается в IE8-. Относительно экрана: vw, vh, vmin, vmax Во всех современных браузерах, исключая IE8-, поддерживаются новые единицы из черновика стандарта CSS Values and Units 3 : We can use 4 units to specify font-size, px, %, em and newly added rem. The em and rem where bit confusing for me. In this blog post I like to discuss the difference between em and rem which @shidhin taught me.