Changing the color of Navbar Links in Bootstrap-vue: A Simple Guide

I'm facing an issue where the method I understand in Bootstrap4 isn't working the same way in Bootstrap-vue.

Here is the code snippet from my Homepage.vue file:

<template>
  <div class="forVue">
    <div>
        <b-navbar toggleable="sm" type="dark" variant="dark">

            <b-navbar-toggle target="nav-collapse"></b-navbar-toggle>

            <b-collapse id="nav-collapse" is-nav>

                <b-navbar-nav class="mx-auto">
                    <b-nav-item href="/home">Home</b-nav-item>
                    <b-nav-item href="/home">Services</b-nav-item>
                    <b-nav-item href="/home">Contact</b-nav-item>
                    <b-nav-item href="/about">About Us</b-nav-item>
                </b-navbar-nav>

            </b-collapse>

        </b-navbar>
    </div>
  </div>
</template>

This is the CSS within style tags in the same file:

<style>
    .nav-item {
        color: red !important;
    }
</style>

The above styling doesn't seem to work as the color remains default. Furthermore, I'm having trouble figuring out how to change the entire navbar's color without using the !important tag. The following code works but I want to avoid using !important:

.navbar {
        background-color: red !important;
    }

Any suggestions on how to achieve this without relying on the !important tag?

cssvue.jssassbootstrap-4bootstrap-vue

Answer №1

If you want to remove the !important rule, you can achieve this by creating a more specific selector than the one currently in place.

In BoostrapVue, it appears that the specificity for .nav-link colors is 3 × class, so using 3 × class + 1 × el should work:

.nav-item.nav-item.nav-item a {
  color: red;
}

To simplify this process and avoid repeating class selectors multiple times, you can increase the specificity of your selectors with 1 × id:

#app .nav-item a { color: red }

Another approach is to use a selector without an ancestor id, like this:

body:not(#_) .nav-item a {
  color: red;
}

When working with scss, wrapping your code within 

body:not(#_) { ...current code ... }
will suffice.

While some may argue that inflating specificity in CSS is similar to using !important and can lead to increased complexity, it's important to prioritize JavaScript driven styling over the use of !important.

For similar issues, inspecting the element, identifying the current applied rule, and creating a slightly more specific one (or placing it in the component's <style> tag) are effective solutions.

Ensure that your code is placed inside a <style> tag that is not scoped. If necessary, use prefixing techniques like /deep/, ::v-deep, or >>> for scoped styles. Keep in mind any bugs related to piercing selectors in <style> tags when using lang="scss".

Answer №2

To change the color scheme to a red variant, you can easily use variant="danger" as shown below:

<b-navbar toggleable="sm" type="dark" variant="danger">

The <b-navbar> component supports various background color variants from Bootstrap v4. To modify the background color, set the variant prop to one of the following values: primary, success, info, warning, danger, dark, or light.

new Vue({
  el: '#app'
})
#app { padding: 20px;}.navbar{margin-bottom:10px}
<!-- Load required Bootstrap and BootstrapVue CSS -->
<link type="text/css" rel="stylesheet" href="//unpkg.com/bootstrap/dist/css/bootstrap.min.css" />
<link type="text/css" rel="stylesheet" href="//unpkg.com/bootstrap-vue@latest/dist/bootstrap-vue.min.css" />
<script src="//polyfill.io/v3/polyfill.min.js?features=es2015%2CIntersectionObserver" crossorigin="anonymous"></script>
<script src="//unpkg.com/vue@latest/dist/vue.min.js"></script>
<script src="//unpkg.com/bootstrap-vue@latest/dist/bootstrap-vue.min.js"></script>
<script src="//unpkg.com/bootstrap-vue@latest/dist/bootstrap-vue-icons.min.js"></script>

<div id="app">
  <b-navbar toggleable="sm" type="dark" variant="dark">
    <b-navbar-toggle target="nav-collapse"></b-navbar-toggle>
    <b-collapse id="nav-collapse" is-nav>
      <b-navbar-nav class="mx-auto">
        <b-nav-item href="/home">Home</b-nav-item>
        <b-nav-item href="/home">Services</b-nav-item>
        <b-nav-item href="/home">Contact</b-nav-item>
        <b-nav-item href="/about">About Us</b-nav-item>
      </b-navbar-nav>
    </b-collapse>
  </b-navbar>
  <b-navbar toggleable="sm" type="dark" variant="danger">
    <b-navbar-toggle target="nav-collapse"></b-navbar-toggle>
    <b-collapse id="nav-collapse" is-nav>
      <b-navbar-nav class="mx-auto">
        <b-nav-item href="/home">Home</b-nav-item>
        <b-nav-item href="/home">Services</b-nav-item>
        <b-nav-item href="/home">Contact</b-nav-item>
        <b-nav-item href="/about">About Us</b-nav-item>
      </b-navbar-nav>
    </b-collapse>
  </b-navbar>
  <b-navbar toggleable="sm" type="dark" variant="primary">
    <b-navbar-toggle target="nav-collapse"></b-navbar-toggle>
    <b-collapse id="nav-collapse" is-nav>
      <b-navbar-nav class="mx-auto">
        <b-nav-item href="/home">Home</b-nav-item>
        <b-nav-item href="/home">Services</b-nav-item>
        <b-nav-item href="/home">Contact</b-nav-item>
        <b-nav-item href="/about">About Us</b-nav-item>
      </b-navbar-nav>
    </b-collapse>
  </b-navbar>
</div>

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