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chore: improve the stacking context notes?

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Corbin Crutchley
2022-09-07 04:47:04 -07:00
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@@ -370,12 +370,29 @@ This is because browsers paint positioned elements before non-positioned element
While `relative` positioning is one way that you can tell the browser to paint an element first, it's far from the only way to do so. Here's a list of CSS rules that will change the order an element paints in, from the lowest priority to the highest priority: While `relative` positioning is one way that you can tell the browser to paint an element first, it's far from the only way to do so. Here's a list of CSS rules that will change the order an element paints in, from the lowest priority to the highest priority:
1) Positioned elements with a negative `z-index` 1. The `background` of the following tags: `html`, `:root`, `body`
2) The background and borders of the parent element
3) Non-positioned elements 2. The `background` of the [stacking context root element](#stacking-contexts)
4) Elements with a `float` style applied
5) Non-positioned inline elements > Come back to this at the end of the article, it won't make sense now.
6) Positioned elements without a `z-index` applied, or with a `z-index` of `0`
3. Positioned elements with a negative `z-index`
4. Non-positioned elements
5. Elements with a `float` style applied without a `position` applied
6. Non-positioned `inline` elements
7. ???
8. Positioned elements without a `z-index` applied, or with a `z-index` of `0`, as well as a few other rules
9. Elements with `z-index` of `1` or more
10. Depending on your browser, [`outline`](https://developer.mozilla.org/en-US/docs/Web/CSS/outline)s
> While this includes [all of steps of painting order according to the CSS specification](https://www.w3.org/TR/CSS22/zindex.html), this is a non-comprehensive list in order to keep the list readable.
So, if we have the following HTML: So, if we have the following HTML:
@@ -424,7 +441,7 @@ You would see the following order of elements:
This is because the `lime` and `slate` take painting priority over `yellow` and `cyan` thanks to their `relative` positioning, but are still in HTML order within the same `z` level priority and within the same stacking context. This is because the `lime` and `slate` take painting priority over `yellow` and `cyan` thanks to their `relative` positioning, but are still in HTML order within the same `z` level priority and within the same stacking context.
# Creating Stacking Contexts # Creating Stacking Contexts {#stacking-contexts}
> "Welp, that's enough reading in the book today" > "Welp, that's enough reading in the book today"