Utilizing Bootstrap CSS within Vue's scope

Question

Utilizing Bootstrap CSS within Vue's scope

I'm attempting to integrate Bootstrap into a Vue component while ensuring that all CSS is scoped. My initial approach was as follows:

<style scoped>
@import "~bootstrap/dist/css/bootstrap.css";
@import "~bootstrap-vue/dist/bootstrap-vue.css";
</style>

Unfortunately, it appears that the CSS is not actually scoped in this setup. Is there an alternative method to achieve scoped CSS with Bootstrap in Vue?

css twitter-bootstrap webpack vue.js vue-loader

Answer 1

Answer №1

<style scoped src="~bootstrap/dist/css/bootstrap.css"></style>

<style scoped src="~bootstrap-vue/dist/bootstrap-vue.css"></style>

Important Update: Utilizing SCSS for a workaround

Here's the reason why the initial solution may not be effective:

When using scoped styles, the parent component's styles do not spill over to child components.

If you wish for a selector in scoped styles to have a "deep" impact on child components, you can employ the >>> combinator

as per the information provided in the Vue documentation on scoped CSS

The modal that was mentioned might not be controlled by the component where Bootstrap was imported. It could be within a child component or utilizing the jquery version of Bootstrap modal. Consequently, the data attributes will not be applied to the modal.

To address this issue, Deep Selector is required. (Further explanation can be found at )

Here's how I would incorporate the entire Bootstrap CSS using SCSS. (This task seems unfeasible solely with pure CSS.)

<template>
  <div class="main-wrapper">
    /* ... */
  </div>
</template>

<style scoped lang="scss">
.main-wrapper /deep/ {
  @import "~bootstrap/dist/css/bootstrap.min";
}
</style>

Some pre-processors like Sass may have difficulty parsing >>> correctly. In such cases, you can resort to the /deep/ combinator instead - it acts as an alias for >>> and functions identically.

The resulting CSS output will resemble

.main-wrapper[data-v-656039f0] .modal {
    /* some css... */
}

.. which aligns with your objectives.

However, I must emphasize that importing the complete Bootstrap CSS is not recommended practice. It's preferable to import only the necessary parts from bootstrap-sass.

This approach may seem unconventional but is currently the most suitable option for your scenario.

Answer 2

<style scoped src="~bootstrap/dist/css/bootstrap.css"></style>

<style scoped src="~bootstrap-vue/dist/bootstrap-vue.css"></style>

Important Update: Utilizing SCSS for a workaround

Here's the reason why the initial solution may not be effective:

When using scoped styles, the parent component's styles do not spill over to child components.

If you wish for a selector in scoped styles to have a "deep" impact on child components, you can employ the >>> combinator

as per the information provided in the Vue documentation on scoped CSS

The modal that was mentioned might not be controlled by the component where Bootstrap was imported. It could be within a child component or utilizing the jquery version of Bootstrap modal. Consequently, the data attributes will not be applied to the modal.

To address this issue, Deep Selector is required. (Further explanation can be found at )

Here's how I would incorporate the entire Bootstrap CSS using SCSS. (This task seems unfeasible solely with pure CSS.)

<template>
  <div class="main-wrapper">
    /* ... */
  </div>
</template>

<style scoped lang="scss">
.main-wrapper /deep/ {
  @import "~bootstrap/dist/css/bootstrap.min";
}
</style>

Some pre-processors like Sass may have difficulty parsing >>> correctly. In such cases, you can resort to the /deep/ combinator instead - it acts as an alias for >>> and functions identically.

The resulting CSS output will resemble

.main-wrapper[data-v-656039f0] .modal {
    /* some css... */
}

.. which aligns with your objectives.

However, I must emphasize that importing the complete Bootstrap CSS is not recommended practice. It's preferable to import only the necessary parts from bootstrap-sass.

This approach may seem unconventional but is currently the most suitable option for your scenario.

Answer 3

Answer №2

Although this question may be dated, I found a solution that worked well for me:

<style lang="scss" scoped>
 ::v-deep {
   @import 'bootstrap/scss/bootstrap.scss';
 }
</style>

Answer 4

Although this question may be dated, I found a solution that worked well for me:

<style lang="scss" scoped>
 ::v-deep {
   @import 'bootstrap/scss/bootstrap.scss';
 }
</style>

Answer 5

Answer №3

When I decided to incorporate Vuetify into my application on just one page, it caused a crash in my CSS. To resolve this issue, I included the following code:

<style scoped src="vuetify/dist/vuetify.min.css"></style>

After making this adjustment, everything is now working perfectly.

<template>
  <div> .......  </div>
</template>

<style scoped src="vuetify/dist/vuetify.min.css"></style>
<script> ...... </script>

Answer 6

When I decided to incorporate Vuetify into my application on just one page, it caused a crash in my CSS. To resolve this issue, I included the following code:

<style scoped src="vuetify/dist/vuetify.min.css"></style>

After making this adjustment, everything is now working perfectly.

<template>
  <div> .......  </div>
</template>

<style scoped src="vuetify/dist/vuetify.min.css"></style>
<script> ...... </script>

Answer 7

Answer №4

After much trial and error, I finally discovered the foolproof solution to make it function properly without any leaks:

<style lang="less" scoped>
    ::v-deep {
        @import (less) "../node_modules/vuetify/dist/vuetify.min.css";
    }
</style>

In addition, switching the casting to scss is also a viable option.

Answer 8

After much trial and error, I finally discovered the foolproof solution to make it function properly without any leaks:

<style lang="less" scoped>
    ::v-deep {
        @import (less) "../node_modules/vuetify/dist/vuetify.min.css";
    }
</style>

In addition, switching the casting to scss is also a viable option.

Answer 9

Answer №5

Vue 3 has made a change to the ::v-deep selector, where the old method is still functional but now considered deprecated. This could result in numerous deprecation messages appearing in your build if you're importing css/scss in this manner.

In Vue 3, you can achieve this by:

<template>
    <div class="main-wrapper">
        <div class="bootstrap-scope">
            /* All children that require Bootstrap styling, including slotted content etc */
        </div>
    </div>
    
</template>

<style scoped lang="scss">
    .main-wrapper::v-deep(.bootstrap-scope) {
        @import "~bootstrap";
    }
</style>

You can also omit the div.main-wrapper and target the root div SFC component. For example, if your component name is my-awesome-component, the selector would be:

<style scoped lang="scss">
    .my-awesome-component::v-deep(.bootstrap-scope) {
        @import "~bootstrap";
    }
</style>

If you prefer not to use a generated class name, another option is:

<style scoped lang="scss">
    div:first-child::v-deep(.bootstrap-scope) {
        @import "~bootstrap";
    }
</style>

To select the root of your component in actual shadowDom, you would typically use the :host selector. However, it seems that the vue-loader team has not yet reached a decision on this matter (https://github.com/vuejs/vue-loader/issues/1601).

The Vue 3 documentation includes a brief explanation of the :deep() selector: https://v3.vuejs.org/api/sfc-style.html#deep-selectors

For more detailed information on why the deep selector keeps evolving, refer to the VueJS RFC on the matter: https://github.com/vuejs/rfcs/blob/master/active-rfcs/0023-scoped-styles-changes.md

Answer 10

Vue 3 has made a change to the ::v-deep selector, where the old method is still functional but now considered deprecated. This could result in numerous deprecation messages appearing in your build if you're importing css/scss in this manner.

In Vue 3, you can achieve this by:

<template>
    <div class="main-wrapper">
        <div class="bootstrap-scope">
            /* All children that require Bootstrap styling, including slotted content etc */
        </div>
    </div>
    
</template>

<style scoped lang="scss">
    .main-wrapper::v-deep(.bootstrap-scope) {
        @import "~bootstrap";
    }
</style>

You can also omit the div.main-wrapper and target the root div SFC component. For example, if your component name is my-awesome-component, the selector would be:

<style scoped lang="scss">
    .my-awesome-component::v-deep(.bootstrap-scope) {
        @import "~bootstrap";
    }
</style>

If you prefer not to use a generated class name, another option is:

<style scoped lang="scss">
    div:first-child::v-deep(.bootstrap-scope) {
        @import "~bootstrap";
    }
</style>

To select the root of your component in actual shadowDom, you would typically use the :host selector. However, it seems that the vue-loader team has not yet reached a decision on this matter (https://github.com/vuejs/vue-loader/issues/1601).

The Vue 3 documentation includes a brief explanation of the :deep() selector: https://v3.vuejs.org/api/sfc-style.html#deep-selectors

For more detailed information on why the deep selector keeps evolving, refer to the VueJS RFC on the matter: https://github.com/vuejs/rfcs/blob/master/active-rfcs/0023-scoped-styles-changes.md

Utilizing Bootstrap CSS within Vue's scope

Answer №1

Answer №2

Answer №3

Answer №4

Answer №5

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