Css div fill screen

Блок на весь экран | CSS

If the height of the containing block is not specified explicitly (i.e., it depends on content height), and this element is not absolutely positioned, the percentage value is treated as ‘0’ (for ‘min-height’) or ‘none’ (for ‘max-height’). [w3.org]

html, body < height: 100%; margin: 0; padding: 0; overflow: hidden; >body < overflow: auto; /* добавить полосу прокрутки */ > main

Блок шириной на весь экран монитора выровнять по центру окна браузера

У многих сайтов, в том числе у «Шпаргалки блоггера» содержание ограничено определённой шириной и горизонтально выравнивается по середине экрана.

Для того, чтобы контент выходил за пределы этих 1200px , но был ограничен шириной окна браузера, достаточно такого кода:

Картинка на весь экран CSS

Особенно здорово смотрятся изображения. Они занимают необходимое им пространство, но не более ширины окна браузера.

Код немного доработан, опираясь на статью «Размер изображения меняется при изменении экрана браузера». Там же написан соответствующий вариант для видео.

7 комментариев:

Agent_Smith Полезная штука, спасибо Вам) NMitra Для себя делала :)) Другие прописывают max-width для каждого отдельного тега (p, pre и т.п.), а не для всей колонки main. Анонимный С высотой блока не работает. просто по ширине экрана, ниже обрезается и никуда не скролится NMitra Ничего не поняла 🙂 Приведите пример, пожалуйста. Анонимный о Иван Сафронов не работает данный метод NMitra Так не может быть: на данной странице ведь работает. Покажите URL, где внедрён код и поясните что именно хотите сделать. Например, блок с заголовком «Популярное».

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CSS Height Full Page CSS gotcha: How to fill page with a div?

So let’s say you want a div that fills up entire page.

div  height: 100%; width: 100%; font-size: 20px; background-color: lightskyblue; > 

What?! It doesn’t work! The height still only takes up the content, but not the whole page.

The width is good since a div is by default a block element, which takes as much width as possible anyways.

Can we just use a more «absolute» value like px ?

div  /* height: 100% */ height: 865px; /* current height of my browser */ /* . */ > 

It works. until the browser is resized It doesn’t adapt when the browser is resized. You can use JS for this, but that’s way overkill for what we wanted.

I mentioned px is «absolute», but only in the sense that they are not relative to anything else (like rem and vh). But the actual size still depends on the device. Here’s some details:

Relative units to the rescue!

Old school height: 100%

html, body  height: 100%; width: 100%; > div  height: 100%; /* . */ > 

Works! (We’ll fix the scrollbars later) By setting both and its child to 100% height, we achieve the full size. Note that only setting either of them won’t work, since percentage is always relative to another value. In this case:

• div is 100% the height of the body
• body is 100% the height of the html
• html is 100% the height of the Viewport

Viewport is the visible area of the browser, which varies by device.

For example, an iPhone 6/7/8 has a 375×667 viewport. You can verify this on your browser dev tools mobile options.

For now, you can think about viewport as the device pixel size or resolution. But if you want to go deep:

newer solution: viewport units vh and vw

Viewport-percentage lengths aka Viewport units have been around for a while now, and is perfect for responding to browser resizes.

• 1 viewport height ( 1vh ) = 1% of viewport height
• 1 viewport width ( 1vw ) = 1% of viewport width

In other words, 100vh = 100% of the viewport height

100vw = 100% of the viewport width

So these effectively fills up the device viewport.

html, body  /* height: 100%; */ /* width: 100% */ > div  /* height: 100%; width: 100%; */ height: 100vh; width: 100vw; /* . */ > 

Looks good too! (We’ll fix the scrollbars later)

As mentioned in the comments by @angelsixuk and @mpuckett , there is a known jumping behavior during scrolling when using 100vh on mobile browsers, which is an issue but considered intentional by webkit. See these links for details: Viewport height is taller than the visible part of the document in some mobile browsers and Stack Overflow: CSS3 100vh not constant in mobile browser

How about min-height: 100vh ?

While height fixes the length at 100vh , min-height starts at 100vh but allows content to extend the div beyond that length. If content is less than the length specified, min-height has no effect.

In other words, min-height makes sure the element is at least that length, and overrides height if height is defined and smaller than min-height .

For our goal of having a div child with full height and width, it doesn’t make any difference since the content is also at full size.

A good use case of min-height is for having a sticky footer that gets pushed when there is more content on the page. Check this out here and other good uses of vh

A very common practice is to apply height: 100vh and width: 100vw to directly.

In this case, we can even keep the container div relatively sized like in the beginning, in case we change our minds later.

And with this approach, we assure that our entire DOM body occupies full height and width regardless of our container div.

body  height: 100vh; width: 100vw; > div  height: 100%; width: 100%; /* height: 100vh; width: 100vw; */ /* . */ > 

vh/vw versus %

A good way of thinking about vh, vw vs % is that they are analogous to em and rem

% and em are both relative to the parent size, while vw/vh and rem are both relative to «the highest reference», root font size for rem and device viewport for vh/vw.

But why the scrollbar?

and have default margins and paddings!

Browsers feature a default margin, padding and borders to HTML elements. And the worst part is it’s different for each browser!

Chrome default for has a margin: 8px

And 100vh + 8px causes an overflow, since it’s more than the viewport

Luckily, it’s fairly easy to fix that:

html, body  margin: 0; padding: 0; > body . 

This is a «blanket» solution that would cover all margin and padding variations for any browser you might have.

Cool! Now we have our div filling up the page without scrollbars!

Finally, let’s add a little padding, since it’s awkward that the content is right on the edges.

What?! The scrollbar is back! What happened?

box-sizing border-box

box-sizing allows you to define whether the padding and border is included in the div’s height and width.

The default content-box of box-sizing doesn’t include padding and border in the length, so div becomes

border-box includes padding and border, so div stays at our required sizes:

It’s quite common to set all elements to border-box for a consistent layout and sizing throughout pages, using * selector:

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5 CSS Techniques to Make a Div Fill the Screen

Learn how to make a div fill the screen using CSS techniques like flexbox model, and height, position absolute, min-height declaration, and vw/vh units.

• Use the flexbox model to make a div fill the height of the remaining screen space.
• Set both and to 100% height to achieve full size.
• CSS Make A Div Height Full Screen
• Use position absolute and set all the viewport sides (top, right, bottom, left) to 0px to make the div take the full screen.
• Use min-height declaration on the div or its container or use JavaScript to find the initial screen size.
• Use vw (total width screen available) and vh (total height screen available) to make a div height full screen.
• Other helpful code examples for making a div fill screen with CSS techniques
• Conclusion
• How do I make a div width fit to my screen?
• How do I make a div fill its container?
• How do I fill an entire page in CSS?
• How do I make a div height fill the rest of the page?

When designing a website, it is important to ensure that all elements are positioned correctly and take up the appropriate amount of space on the screen. In this blog post, we will explore several CSS techniques to make a div fill the height of the screen. By using the flexbox model, setting the and

to 100% height, using position absolute, min-height declaration, and vw/vh units, among other methods, we can ensure that the div takes up the full screen. Additionally, we will cover some common issues and best practices to keep in mind when implementing these techniques.

Use the flexbox model to make a div fill the height of the remaining screen space.

The flexbox model is an efficient and flexible way to create a responsive layout. Using the flexbox model, we can make a div fill the height of the remaining screen space. Here’s how you can do it:

1. Set the flexbox container to full height by setting height: 100 %.
2. Set the flex item to flex-grow: 1 to make it take up the remaining space.
3. Use flexbox properties like justify-content and align-items to position the div as needed.

Here’s an example code snippet:

Set both and to 100% height to achieve full size.

to 100% height ensures that the div takes up the full screen. Here’s how you can do it:

CSS Make A Div Height Full Screen

In this video, I’ll be showing you 3 different ways to make a div height full screen on the Duration: 5:20

Use position absolute and set all the viewport sides (top, right, bottom, left) to 0px to make the div take the full screen.

Setting position absolute and all the viewport sides to 0px allows the div to take up the full screen. Here’s how you can do it:

Use min-height declaration on the div or its container or use JavaScript to find the initial screen size.

Setting a min-height declaration on the div or its container ensures that the div takes up the appropriate amount of space. Using JavaScript to find the initial screen size can also be used to set the div height. Here’s how you can do it:

Use vw (total width screen available) and vh (total height screen available) to make a div height full screen.

Using vw and vh units is another simple way to make a div height full screen. Here’s how you can do it:

Other helpful code examples for making a div fill screen with CSS techniques

In css, css div fill whole page code example

In css, how to make a div fill the screen code example

Conclusion

By using CSS techniques like the flexbox model, setting and

to 100% height, using position absolute, min-height declaration, and vw/vh units, we can ensure that a div takes up the full screen. It is important to keep in mind common issues like overlapping elements and responsiveness on different screen sizes, and to follow best practices like testing on different browsers and devices, using semantic HTML, and keeping CSS code organized and modular. With these techniques and tips, we can create a professional and responsive website design.

Frequently Asked Questions — FAQs

What is the benefit of using the flexbox model to make a div fill the screen?

The flexbox model is an efficient and flexible way to create a responsive layout. By setting the flexbox container to full height and the flex item to flex-grow: 1, you can make it take up the remaining space and ensure that the div takes up the full screen.

How to set both and to 100% height to achieve full size?

You can achieve full size by setting both and to 100% height. Simply add the following code to your CSS: html, body < height: 100%; >.

Can position absolute be used to make a div fill the screen?

Yes, you can use position absolute and set all the viewport sides (top, right, bottom, left) to 0px to make the div take the full screen. Simply add the following CSS code to your div: position: absolute; top: 0px; right: 0px; bottom: 0px; left: 0px;

What is the role of min-height declaration in making a div fill the screen?

Setting a min-height declaration on the div or its container ensures that the div takes up the appropriate amount of space. This is especially helpful when dealing with overlapping elements and responsiveness on different screen sizes.

How to use vw/vh units to make a div fill the screen?

Using vw and vh units is another simple way to make a div height full screen. Simply add the following CSS code to your div: height: 100vh;

How to test if the div is filling the screen on different browsers and devices?

It is important to test your website on different browsers and devices to ensure that it is responsive and looks good. You can use online tools like BrowserStack or Sauce Labs to test your website on different devices and browsers.

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