chrome css z index not working
I'm making a course that will teach you how to build a real-world responsive website from scratch! It's one way you can support this site!As an Amazon Associate I earn from qualifying purchases. Feel free to fork my codepen and have a play around with the elements yourself.When creating a website, you might find yourself with a number of different elements that will need to be layered and overlap on the same page, sometimes at the same time.It’s worth planning in advance the order in which your z-index elements should take precedence.
Sign up to get emails about new posts and other info. You’ll learn how to use CSS to bring elements to the front, or back behind other elements.In our first example, we have a relatively simple layout that includes 3 main elements:In this layout, we ideally want the white block of text to be on top of both cats.To try to achieve this, we’ve added some negative margins to the CSS for both cat images, so that they overlap the white block a bit:The first cat is indeed positioned underneath the white content block, just like we want.
This can be tested by moving layer 1’s element underneath layer 2.Now, if we alter the layer 2 z-index to have a value of 2 rather than 1, layer 2 takes precedence again because we’ve explicitly stated it should be place higher than layer 1 in the CSS.Very interesting stuff (at least, it is for geek like me).Okay, so there’s the basic functionality of the z-index CSS property so let’s take a look at some real world examples.Let’s say we want to create a fixed navigation menu that hovers over the main page content. )Now, the modal element is a sibling element to the two others.
Z-index is a CSS property that allows you to position HTML elements in layers on top of one another.
To accomplish this, we’ll add But this causes the bottom cat to be displayed on top of the white block again!You may not run into this issue often, but another aspect of stacking order is that some CSS properties like In my opinion, doing this will solve most, if not all of the more basic z-index issues.Here’s what we have: a simple webpage with regular content, and a pink side tab that says “Send Feedback” that is positioned on top of the content.Then, when you click on the photo of the cat, a modal window with a transparent gray background overlay opens up.However, even when the modal window is open, the side tab is still on top of the gray overlay.
What is z-index? The blue layer (layer 1) is set to a z-index of 1, so layer 2 will be displayed on top.But what if we set layer 2 to have a z-index of 1? The Z-Index property will simply not work if there isn’t a specific positioning for an element that isn’t static.
The property can take large numeric values, as well as minus values should you want to position elements further back in the stack.An element without a z-index specifically assigned to it, automatically inherits in the z-index of its parent and if the parent element doesn’t have a value set, then the default z-index is 0.As you can see from the example above, we’re trying to position both layer 1 and layer 2 to the top left of the base layer. TL;DR: the most common cause for z-index not working is not explicitly declaring a CSS position value (i.e.
To do this we’re using the absolute positioning CSS property along with the z-index property.As you can see, the orange layer (layer 2) is the layer on top. What is z-index? According to this rule, positioned elements will display on top of unpositioned elements.This is how it will look– you can also play around with the Codepen above.Now, the next thing we want to do is rotate the bottom cat upside down, using the As we just mentioned, we want to turn the bottom cat upside down. We want the overlay to be displayed over everything, including the side tab.Let’s take a look at the CSS for the elements in question:All the elements have their position set, and the side tab has a Previously, we addressed some factors that go into the stacking context, such as if the element has its position set, as well as its order in the markup.Let’s take a closer look at the three elements in question.Looking at the markup, we can see that the content and side tab elements are siblings.
Well, the next thing to investigate is the order of your HTML elements and how you’ve applied your z-index property to them.Here’s a pretty good example how the CSS z-index works in a real-world scenario that might just fix your problem.The CSS z-index property works by assigning the property with a numeric value to any element.
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