Css body text width

width

The width CSS property sets an element’s width. By default, it sets the width of the content area, but if box-sizing is set to border-box , it sets the width of the border area.

Try it

The specified value of width applies to the content area so long as its value remains within the values defined by min-width and max-width .

• If the value for width is less than the value for min-width , then min-width overrides width .
• If the value for width is greater than the value for max-width , then max-width overrides width .

Syntax

/* values */ width: 300px; width: 25em; /* value */ width: 75%; /* Keyword values */ width: max-content; width: min-content; width: fit-content(20em); width: auto; /* Global values */ width: inherit; width: initial; width: revert; width: revert-layer; width: unset; 

Values

Defines the width as a distance value.

Defines the width as a percentage of the containing block’s width.

The browser will calculate and select a width for the specified element.

The intrinsic preferred width.

The intrinsic minimum width.

Uses the fit-content formula with the available space replaced by the specified argument, i.e. min(max-content, max(min-content, )) .

Accessibility concerns

Ensure that elements set with a width aren’t truncated and/or don’t obscure other content when the page is zoomed to increase text size.

Formal definition

Initial value	auto
Applies to	all elements but non-replaced inline elements, table rows, and row groups
Inherited	no
Percentages	refer to the width of the containing block
Computed value	a percentage or auto or the absolute length
Animation type	a length, percentage or calc();

Formal syntax

width =
auto |
|
min-content |
max-content |
fit-content( )

=
|

Examples

Default width

p class="goldie">The Mozilla community produces a lot of great software.p> 

Example using pixels and ems

.px_length  width: 200px; background-color: red; color: white; border: 1px solid black; > .em_length  width: 20em; background-color: white; color: red; border: 1px solid black; > 

div class="px_length">Width measured in pxdiv> div class="em_length">Width measured in emdiv> 

Example with percentage

.percent  width: 20%; background-color: silver; border: 1px solid red; > 

div class="percent">Width in percentagediv> 

Example using «max-content»

p.maxgreen  background: lightgreen; width: intrinsic; /* Safari/WebKit uses a non-standard name */ width: -moz-max-content; /* Firefox/Gecko */ width: -webkit-max-content; /* Chrome */ width: max-content; > 

p class="maxgreen">The Mozilla community produces a lot of great software.p> 

Example using «min-content»

p.minblue  background: lightblue; width: -moz-min-content; /* Firefox */ width: -webkit-min-content; /* Chrome */ width: min-content; > 

p class="minblue">The Mozilla community produces a lot of great software.p> 

Specifications

Browser compatibility

BCD tables only load in the browser

See also

Found a content problem with this page?

This page was last modified on Jul 18, 2023 by MDN contributors.

Your blueprint for a better internet.

MDN

Support

Our communities

Developers

Visit Mozilla Corporation’s not-for-profit parent, the Mozilla Foundation.
Portions of this content are ©1998– 2023 by individual mozilla.org contributors. Content available under a Creative Commons license.

Источник

Fitting Text to a Container

There are a number of ways to go about putting some text in a container and having it size itself to fill that container. There are different technologies we can use and different considerations to think about. Let us count the ways.

Magic Number it with viewport units

If you set type with vw (viewport width) units, you can find an exact number where the text pretty closely fits the container and doesn’t break as you resize. I’d call this a magic number. In this case, font-size: 25.5vw; works down to a 320px viewport, but still will break much lower than that. See the Pen Fitted Text with Viewport Units by Chris Coyier (@chriscoyier) on CodePen. This is kind of a less exotic version of fluid typography, which involves more of a sprinkling of viewport units and min/max sizes.

Dave Rupert’s FitText is up for the job. You still need a bit of a magic number to get the sizing just right for any particular job: See the Pen Fitted Text with FitText by Chris Coyier (@chriscoyier) on CodePen.

Swap the words in FitText around and you got yourself textFit! It’s another JavaScript library that adjusts font sizes to fit text into a container. Big caveat here though: textFit is designed for two-dimensions. So you need a width and height on the element for it to do it’s thing.

fitty is more like FitText in that it resizes type to maximize just horizontally, but actually seems to require no magic numbers.

TextFill is jQuery-based and requires a width, height, and a configured maximum font size to work. Here’s the basic demo we’ve been working from:

FlowType is kind of designed to work on a whole document of text, resizing it all fluidly at once, with minimum and maxium viewport sizes. But you can scope it however you want. You also apply a magic number to get things how you want them.

With width: 100% and a viewBox , SVG will be a fullsize box that resizes with an aspect ratio. Pretty neat trick! To set the type, you’ll need some magic numbers to get that viewBox just right and push the text into the right spot — but it’s doable with zero dependencies, just like the viewport units demo.

Psst! Create a DigitalOcean account and get $200 in free credit for cloud-based hosting and services.

Comments

PSA: vw is broken, because it measures what is every single time the wrong thing. It measures the viewport’s initial containing block, which means the entire viewport width including the vertical scrollbar that is almost certain to be there. This matters on operating systems that don’t use overlay scrollbars (Windows, many Linuxes, and some macOS users opt out of overlay scrollbars); on Windows, it’ll generally amount to 100vw actually being 17px wider than the body width. Therefore I say, if you are trying to measure things precisely with vw: (a) just don’t, you can’t succeed; and (b) if you insist on it anyway, make sure to allow at least 20px of slack (if that’s not acceptable, vw will not solve your problem)—and be ready to accept that even then your calc(100vw – 20px) may be wider than the body width in some circumstances.

Good to know. I find when I’m using viewport units I’m often not looking for super precision. I often use them to sprinking in a little viewport related bumps up and down with calc.

The best way I’ve gone about solving this is creating a CSS variable —window-width and set it to 100vw . Then in javascript i set this CSS variable to document.body.clientWidth which will get the width of window without the scrollbar.

Any suggestions on how to fit text vertically? I always end up with space above and below that I can’t seem to get rid of without adjusting line-height with magic numbers

Only the SVG worked properly in Firefox, none of the others. Neither textFit or TextFill work in Chrome or Firefox. fitty seemed to only react after screen resize event “ended”, but not live. (by design?) All of these feel like the incredibly awful Flash based text of 10 years ago, except for pure CSS using vw (why call this a “magic” number when it’s simple math/calc going on… nothing magic, and makes total sense) The Flash criticism is a bit funny to me because it really was just a clumsy SVG, but SVG is just an “image”, which I can get behind for custom uses. I agree that trying to make any adjustments with text “exact” is a recipe for disaster and reminds me of print designers making entire page layouts, with text, all as one image because they hated how they couldn’t control the design perfectly. Let go of control, and either style with breakpoints, vw + calc (or whatever) and let go of perfection. You get better designs and less stress. If you need pixel prefect layout, SVG to the rescue. CSS shouldn’t have to fill every niche need, it’s pulling more than it’s weight already.

Источник