Why does Z Index not work sometimes?

TL;DR: the most common cause for z-index not working is not explicitly declaring a CSS position value (i.e. position: relative, absolute, fixed or stick) on the element. But if this hasn’t solved your z-index issue or just want to get a little more information about the CSS property, then let’s go a little deeper.

How do I fix Z Index not working?

To sum up, most issues with z-index can be solved by following these two guidelines:

1. Check that the elements have their position set and z-index numbers in the correct order.
2. Make sure that you don’t have parent elements limiting the z-index level of their children.

Why is Z index ignored?

2 Answers. There’s actually two reasons: Its parent is set to show up behind the logo. Any z-index applied to elements within that parent element will only apply to other elements within that parent.

Does Z index only work with absolute positioning?

Note: z-index only works on positioned elements (position: absolute, position: relative, position: fixed, or position: sticky) and flex items (elements that are direct children of display:flex elements).

What is the difference between position fixed and absolute?

Whereas the position and dimensions of an element with position:absolute are relative to its containing block, the position and dimensions of an element with position:fixed are always relative to the initial containing block. This is normally the viewport: the browser window or the paper’s page box.

What is the highest Z-Index CSS?

±2147483647
The maximum range is ±2147483647. In CSS code bases, you’ll often see z-index values of 999, 9999 or 99999. This is a perhaps lazy way to ensure that the element is always on top. It can lead to problems down the road when multiple elements need to be on top.

Why do we use Z index in CSS?

When elements are positioned, they can overlap other elements. The z-index property specifies the stack order of an element (which element should be placed in front of, or behind, the others).

What is the Z index in CSS?

Z Index ( z-index ) is a CSS property that defines the order of overlapping HTML elements. Elements with a higher index will be placed on top of elements with a lower index. Note: Z index only works on positioned elements ( position:absolute , position:relative , or position:fixed ).

Why is my position absolute not working?

If you are placing an element with absolute position, you need the base element to have a position value other than the default value. In your case if you change the position value of the parent div to ‘relative’ you can fix the issue.

Why is my position sticky not working?

Position sticky will most probably not work if overflow is set to hidden, scroll, or auto on any of the parents of the element. Position sticky may not work correctly if any parent element has a set height. Many browsers still do not support sticky positioning. Check out which browsers support position: sticky.

Why is Z-Index bad?

The problem with the z-index value is that it has developed a bad reputation. As you can imagine it is easy to get carried away and apply the maximum value of 2,147,483,647 to your element as that is the most important element on the page.

Does position absolute ignore Z-index?

6 Answers. The second div is position: static (the default) so the z-index does not apply to it. You need to position (set the position property to anything other than static , you probably want relative in this case) anything you want to give a z-index to.