7/2/2023 0 Comments Background image parallax css![]() ![]() So it is parallax not just as fancy as the traditional parallax which has really died and didn’t survive the world of Google page rank and various mobile browsers etc. What is more realistic now especially if you want to rank a site good on Google and still add some awesomeness are either jquery Parallax driven backgrounds or complete CSS “static” background-position:fixed/ background-attachment-fixed and background-size: cover” on various div “containers” It’s one of the reasons why “full parallax” websites did not last. however that has huge effects on Google rank/ analytic crawling if you do not know what you are doing. The links you have alluded to are “Full Parallax websites where each element is driven by jquery parallax variable mostly from resources like Github etc.Ī smooth moving parallax background is achieved by adding jquery. However the heading of this article should have been “Parallax Background Fixed Position: CSS only”. then jquery was implemented to even make it “wicked” It is already supported in IE9 and Android 2.1. setting base styles to image containersĪ quick check regarding browser support on MDN shows almost global compatibility. Let's have a quick check on the actual implementation: This leads to the nice visual parallax effect. This means that the image will stay visually on the same position no matter how much scrolling will be done. fixed defines that the background image position is not fixed to the depending element but rather fixed to the viewport. It gets interesting by setting the background-attachment to fixed. The user scrolls on a website and elements are moving up and down and so do the background images. There is nothing fancy about that and we all know this behavior. The initial value of the property is scroll, which basically means that the image position is fixed to its element. By defining background-attachment the behavior and positioning of any background image can be changed. These elements additionally need to have defined background-attachment: fixed. To get this parallax effect, background images have to be placed on different elements. See the Pen Parallax with background-attachment : fixed by Stefan Judis ( on CodePen. What only a few people may know, is that this effect can be achieved via CSS, too. In short: parallax done with JavaScript can decrease the scrolling performance of a website quite quickly. To move the mentioned layers, background positions of images get calculated and set to the depending elements, which then additionally causes a lot of DOM manipulations. This leads to tons of events being handled via JavaScript (handling the scroll event can easily cause performance issues and should be considered carefully). These plugins mostly attach an event handler to the scroll event of the window object. Doing this unfortunately has a few disadvantages. The height can be arbitrary and whatever you want to set it as for the image you are using. Following this, we must define the width and height of our image div. This also allows us to repeat the image easily by using the repeat-x value with background when we define the image. In web design, the most common way to achieve this is by simply adding a jQuery plugin to a website. For this, let’s add the image using the background property in CSS. ![]()
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