Html full screen background

CSS Make Background Image Full Screen

Then, make the div full screen so that the background image fits the full screen of the browser window.

Note: You can change the size of the container div if you do not want the image to fill the whole screen because the background image will only be visible based on the size of the container div.

There are a few ways to make a div full screen but I’m going to use the height:100% CSS property to achieve it this time.

This is a two-step process.

Step 1. Add a couple of CSS properties to the html and body selectors. Setting the margin to 0 will get rid of any white space around the browser window and set the height to 100%.

html, body  margin:0; height:100%; > 

Step 2. Add three properties to the .bg-container selector.

.bg-container  width:100%; height:100%; border:5px solid red; > 

I’ve explicitly set the width to 100%, but we do not have to because div is a block-level element and its default width is stretched to its parent width, in this case, body.

Then, set height:100% which will stretch the height of the .bg-container to the bottom edge of the browser viewport. In order to get the height to work, make sure you’ve added the height:100% to the html and body selector above, otherwise, it won’t work.

To see that .bg-container, add the border with 5px width, solid style, and red color.

At this stage, I have an issue that the scroll bars appear on the right and bottom which hide the red border.

To hide the scroll bar, add overflow: hidden to the html and body CSS selectors.

html, body  margin:0; height:100%; overflow:hidden; > 

As you can see from the below picture, the scroll bar is gone but the border at the bottom and right are still hidden.

This is because when you give a border to the element that is already 100% width, the border will be added to the container in addition to the 100% width on both left and right sides. That’s why the border on the right and bottom stretched beyond the edge of the browser viewport.

To bring the border back in, in other words, include the border within the 100% width, all I have to add is the box-sizing:border-box CSS property to the .bg-container.

.bg-container  width:100%; height:100%; border:5px solid red; box-sizing:border-box; > 

This way, I know if I add an image as a background image to this container it will be visible to the full screen.

Add Background Image Full Screen

Let’s add the background image to the .bg-container.

For that, all I have to do is add the background-image CSS property to the .bg-container with the image URL path which will normally be the image location of your project folder or any web image URL.

Источник

How to Make HTML Background Image Full Screen?

It is often more visually pleasing and interesting to add images to the background of certain parts of a website than to change only the color of the background. Depending on the available space, the image can be left at its natural size, stretched, or constrained. This article describes how to set an image as the background for an element using the background-size property in CSS.

Pre-requisites

1. HTML for the structure of our image.
2. CSS for styling and making our background image responsive.

What are we Creating?

Here we’ll learn how to stretch a background image to cover the entire browser viewport. The CSS background-size property will be used to accomplish this, and JavaScript is not required. Background images are often stretched out to cover the entire browser viewport by web designers as it looks enticing to the users who are visiting our websites. It is pretty easy to accomplish this task by using a few lines of CSS in our projects. The final output of what we would create is shown below :

How to Make Full-Screen Responsive Background Image with CSS

To make our images responsive, we plan to do the following:

1. Fill the Entire Viewport with the background-size Property

It is possible to set the CSS background-size property to cover. Using this value, the browser will automatically and proportionally scale the background image’s width and height so that they are either equal to or greater than the view port’s width and height.

2. Use Media Queries to Provide a Smaller Background Image for Mobile Devices

A scaled-down version of the background image file will be served to speed up the page load on small screens with a media query. Choosing this option is optional.

What are the benefits of serving a smaller background image on a mobile device? In the demo, I used an image of about 5 9 7 6 ∗ 3 5 7 0 5976*3570 5 9 7 6 ∗ 3 5 7 0 px.

With this size, we’ll be covered on the vast majority of widescreen computer monitors currently available. However, it will require us to serve up a 1 . 5 M B 1.5MB 1 . 5 M B file.

It is never a good idea for a background photo to take up such a large amount of data, but it is especially bad for mobile Internet. Further, the image dimension is too large on small-screen devices.

We can make the images responsive by using the following approach:

Here is all the markup you need:

We will assign the image to be used as a background to the body element so that the image always covers the entire viewport of our browsers.

Now our background image covers the entire viewport of the browser, and we’re going to assign the image to the body element. Nevertheless, this technique works on any element at the block level (such as a div or a form).

The background image will always scale so that it covers the whole block-level container if the container’s width and height are fluid.

Here’s where the magic happens. Whenever this property/value pair is set, the browser scales the background image to conform to an element’s width and height. Here we’re using the body element as an example.

When a browser sees a background image that is smaller than the body element’s dimensions, it will programmatically enlarge the image. This happens on high-resolution screens with small background images.

It is well known that when images are scaled above their natural dimensions, the image quality degrades (pixelation occurs).

Image quality is negatively affected when images are scaled beyond their natural dimensions.

Consider that when selecting the image for your project, As the demo uses 5 9 7 6 ∗ 3 5 7 0 5976*3570 5 9 7 6 ∗ 3 5 7 0 px photos for larger screens, it’ll be a while before there are problems.

Depending on the size of your background image, the browser can display it as tiles.

Using no-repeat will prevent this from happening:

We will keep our image centered on keeping things looking nice:

In this way, the image will be vertically and horizontally centered at all times.

The next problem is when the height of the content is greater than the height of the visible viewport. In this case, there will be a scroll bar. The background image must remain in place during scrolling down. Otherwise, either the image runs out at the bottom of the background or moves when the user scrolls down (which can be very distracting).

This can be accomplished by setting the background-attachment property to fixed.

Using short notation, all of the background properties described above can be included :

Now we have achieved a fully responsive image that will always cover the entire background and look enticing to the users who visit our website. The code to achieve it is shown below :

The output with the usage of the media query is shown below :

If your mobile connection is slow, you can downsize your original image using Photoshop or another image-editing software.

One of the major disadvantages of using the media query is that, when the browser window is resized, for example, from 1 2 0 0 p x 1200px 1 2 0 0 p x to 6 4 0 p x 640px 6 4 0 p x (or vice versa), the background image will momentarily flicker while it loads.

HTML Background Image Full Screen Without CSS

A variety of methods can be used to set the HTML background image to full screen. In this example, the image will cover the entire screen. This can be done with or without CSS. As you can see in the example below, when we zoom in and out, there is no change in the background image, which is all done using the HTML attributes without adding any CSS.

1. The first property used here is a background image, which sets an image as the background by using the URL.
2. Background-repeat is the next attribute used to keep our image from repeating.
3. Background size is one of the most important attributes used here because it fixes the image in the background so that it does not change when the webpage is zoomed in and out. The cover is given as the value.

Conclusion

1. The CSS background-size property has been used to make the HTML background image full-screen.
2. An element’s background image is controlled by the background-size CSS property. Depending on the available space, the image can be left at its natural size, stretched, or constrained.
3. It is also possible to add an image without using CSS using the background-image, background-repeat, and background-size attributes.

Источник

Full Screen Background Image with CSS

Many modern web designs have started to adopt a large background image which covers the entire width and height of browser window. The website content is placed on top of this full-screen background image. The background image remains fixed at its position as user scrolls and is also responsive, therefore is suitable to be viewed on all device sizes.

In this post I will show, how we can easily place such full screen background images in websites using CSS3. This code example should work in all modern browsers which support CSS3 (IE9+, Chrome, Safari, Opera 10+ and Firefox 3.6+)

CSS code for Full-Screen background image

The full screen background image is generally placed as background property of html or body tag. Below we have added the CSS code to the body tag for setting a full screen background image.

body  background: url(new-york-background.jpg) no-repeat center center fixed; -webkit-background-size: cover; -moz-background-size: cover; -o-background-size: cover; background-size: cover; >

Note the use of background-size property which is present in CSS3 and by setting this property to cover we are asking the browser to use the background image to cover the entire width and height of the browser window.

We have also asked the browser to keep the background image centered and fixed at its position. Due to this, when user scrolls, the background image stays at its place. And when user resizes the browser window, or views it on device with different sizes, the background image gets automatically stretched or clipped in order to cover the entire width and height of browser window.

Demo of Full-Screen Background Image

As you can see it is pretty easy to set an image as full screen background image and works well with responsive web design. You can view the demo as well as the full code on CodePen using one of the options below:

Or Play with the CodePen embed below:

See the Pen Full Screen Background Image by Kanishk Kunal on CodePen.0

Support for Older browsers

While what we did was pretty short and sweet but some of you may desire that this works on older browsers too. There is no one solution that fits all browsers, however you can take a look at different techniques suggested on CSS-Tricks some of which include use of JavaScripts too.

Credit for Background Image used

The background image used in the demo above has been taken from Pixabay and is licensed CC0 i.e. free for commercial use too. You can find more such free high quality images and free images for commercial use and many other free resources on SuperDevResources.

Источник