Styling ​

Styling overview ​

Functional styles ​

You are in control of all aspects of styling, including functional styles. For example, by default, a Dialog Overlay won't cover the entire viewport. You're responsible for adding those styles, plus any presentation styles.

Classes ​

All components accept class attributes, just like normal component. This class will be passed through to the DOM element. You can use it in CSS as expected.

Teleported elements ​

Some elements, such as modals or popovers, are teleported to the body. When using scoped style to apply CSS, you will need to use deep selectors to target them.

Data attributes ​

When components are stateful, their state will be exposed in a data-state attribute. For example, when an Accordion Item is opened, it includes a data-state="open" attribute.

Styling with CSS ​

Styling a part ​

You can style a component part by targeting the class that you provide.

<script setup lang="ts">
import { AccordionRoot, AccordionItem, ... } from "reka-ui";
</script>

<template>
  <AccordionRoot>
    <AccordionItem class="AccordionItem" value="item-1" />
    <!-- ... -->
  </AccordionRoot>
</template>

<style>
.AccordionItem {
  /* ... */
}
</style>

Styling a state ​

You can style a component state by targeting its data-state attribute.

.AccordionItem {
  border-bottom: 1px solid gainsboro;
}

.AccordionItem[data-state="open"] {
  border-bottom-width: 2px;
}

Scoped style ​

You can style a component using scoped style. Be wary of teleported elements, as they require the use of deep selectors to be targeted.

<script setup lang="ts">
import { DropdownMenuRoot, DropdownMenuItem, ... } from "reka-ui";
</script>

<template>
  <DropdownMenuRoot>
    <!-- ... -->
    <DropdownMenuPortal>
      <DropdownMenuContent class="DropdownMenuContent">
        <DropdownMenuItem class="DropdownMenuItem">An item</DropdownMenuItem>
      </DropdownMenuContent>
    </DropdownMenuPortal>
  </DropdownMenuRoot>
</template>

<style scoped>
:deep(.DropdownMenuContent) {
  /* ... */
}

.DropdownMenuItem {
  /* ... */
}
</style>

Styling with Tailwind CSS ​

The examples below are using Tailwind CSS, but you can use any library of your choice.

Styling a part ​

You can style a component part by targeting the class.

<script setup lang="ts">
import { AccordionRoot, AccordionItem, ... } from "reka-ui";
</script>

<template>
  <AccordionRoot>
    <AccordionItem class="border border-gray-400 rounded-2xl" value="item-1" />
    <!-- ... -->
  </AccordionRoot>
</template>

Styling a state ​

With Tailwind CSS's powerful variant selector, you can style a component state by targeting its data-state attribute.

<script setup lang="ts">
import { AccordionRoot, AccordionItem, ... } from "reka-ui";
</script>

<template>
  <AccordionRoot>
    <AccordionItem
      class="
        border border-gray-400 rounded-2xl
        data-[state=open]:border-b-2 data-[state=open]:border-gray-800
      "
      value="item-1"
    />
    <!-- ... -->
  </AccordionRoot>
</template>

Extending a primitive ​

Extending a primitive is done the same way you extend any Vue component.

<script setup lang="ts">
import { AccordionItem, type AccordionItemProps } from "reka-ui";

interface Props extends AccordionItemProps {
  foo: string;
}

defineProps<Props>();
</script>

<template>
  <AccordionItem v-bind="$props"><slot /></AccordionItem>
</template>

Summary ​

Reka UI were designed to encapsulate accessibility concerns and other complex functionalities, while ensuring you retain complete control over styling.

For convenience, stateful components include a data-state attribute.