#Issues with CSS

4 messages · Page 1 of 1 (latest)

fathom tiger
#

Hello, I followed the documentation for CSS & Styling in Astro to build this component:

---
import type { HTMLTag, Polymorphic } from "astro/types";

type SpaceString = `${number | string}${"px" | "em" | "rem" | "ch" | "vw" | "vh" | "vmin" | "vmax" | "%"}`;

type Props<Tag extends HTMLTag> = Polymorphic<{
    as: Tag;
    space?: SpaceString;
}>;

const { as: Tag = "div", space = "var(--s0)", class: className, ...props } = Astro.props;
---

<Tag
    {...props}
    class={`stack ${className ?? ""}`}
    style={{
        "--space": space,
    }}
>
    <slot />
</Tag>

<style>
    .stack {
        display: flex;
        flex-direction: column;
        justify-content: flex-start;
    }

    .stack > * {
        margin-block: 0;
    }

    .stack > * + * {
        margin-block-start: var(--space, 1.5rem);
    }
</style>

Astro compiles it down to this:

.stack:where(.astro-2CSB2562) {
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
}

Which is great but it whenever I pass in space it doesn't do anything because the :where selector doesn't include:

.stack > * {
        margin-block: 0;
}

.stack > * + * {
    margin-block-start: var(--space, 1.5rem);
}

Is there a way to fix this?

normal parcelBOT
#

Hi @fathom tiger. I'm kapa.ai, your friendly support bot. I will try to answer your question by searching through the knowledge base. :wave:

#

Based on the information provided in the extracts, it seems that the issue you're facing is related to the way Astro handles CSS scoping. In Astro, CSS rules within a <style> tag are automatically scoped to the component they're defined in. This means that the styles you define will only apply to HTML written inside of that same component.

Astro uses the :where() pseudo-class to maintain the specificity of your styles. However, it seems that the child selectors (> * and > * + *) in your styles are not being included in the scoped styles. This could be due to the way Astro handles child selectors in scoped styles.

Unfortunately, the extracts do not provide a direct solution to this issue. However, you could try a couple of things:

  1. Increase the specificity of your selectors: In Astro 1.0, the specificity of scoped CSS styles is preserved. This means that you could try increasing the specificity of your selectors to ensure they are applied correctly.

  2. Pass the class prop to child components: In Astro, HTML attributes like class do not automatically pass through to child components. Instead, you can accept a class prop in the child component and apply it to the root element. This allows you to style child components directly.

Here's an example of how you can pass the class prop to a child component:

---const { class: className } = Astro.props;---
<div class={className}> <slot/></div>

And here's how you can use it in your parent component:

---import MyComponent from "../components/MyComponent.astro"---
<style> .red { color: red; }</style>
<MyComponent class="red">This will be red!</MyComponent>

Remember to visually inspect your site output to make sure everything is styled as expected. If not, find your scoped style and increase the selector specificity manually to match the old behavior.