What is the reason that applying bg-dark on a Bootstrap navbar prevents the background-color from being applied?

Is it possible to change the background-color of a Bootstrap navbar by adding custom CSS? I have my own CSS file loaded after Bootstrap, so I assumed my styles would take precedence. However, when I try to apply a new background color to the navbar, it doesn't work unless I remove the existing bg-dark class from the <nav> element. Why does this happen even though my CSS is loaded after Bootstrap's?

.navbar {
  background-color: red;
}
<link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/<a href="/cdn-cgi/l/email-protection" class="__cf_email__" data-cfemail="e7858888939493958697a7d2c9d5c9d5">[email protected]</a>/dist/css/bootstrap.min.css" integrity="sha384-Zenh87qX5JnK2Jl0vWa8Ck2rdkQ2Bzep5IDxbcnCeuOxjzrPF/et3URy9Bv1WTRi" crossorigin="anonymous">

<nav class="navbar navbar-expand-md navbar-dark fixed-top bg-dark">
  <div class="container-fluid">
    <a class="navbar-brand" href="#">Fixed navbar</a>
    <button class="navbar-toggler" type="button" data-bs-toggle="collapse" data-bs-target="#navbarCollapse" aria-controls="navbarCollapse" aria-expanded="false" aria-label="Toggle navigation">
      <span class="navbar-toggler-icon"></span>
    </button>
  </div>
</nav>

htmlcsstwitter-bootstrapbootstrap-5

Answer №1

Upon inspecting the document, it becomes evident that Bootstrap's background color is enforced using a !important declaration, likely to overcome a cascade conflict. To address this issue, we must incorporate the same approach. However, merely adding it is insufficient as we require a selector of equal specificity. In this case, I have utilized .navbar.bg-dark, although body .navbar would serve the purpose as well.

An even more effective solution would involve crafting a custom class to enhance Bootstrap's background styles, such as .navbar.bg-vivid. This practice not only clarifies the applied styling for future reference but also aids other developers in understanding the modifications made.

.navbar.bg-dark,
.navbar.bg-vivid {
  background-color: red !important;
}
<link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/<a href="/cdn-cgi/l/email-protection" class="__cf_email__" data-cfemail="8eece1e1fafdfafceffecebba0bca0bc">[email protected]</a>/dist/css/bootstrap.min.css" integrity="sha384-Zenh87qX5JnK2Jl0vWa8Ck2rdkQ2Bzep5IDxbcnCeuOxjzrPF/et3URy9Bv1WTRi" crossorigin="anonymous">

<nav class="navbar navbar-expand-md navbar-dark bg-dark">
  <div class="container-fluid">
    <a class="navbar-brand" href="#">Navbar (original classes)</a>
    <button class="navbar-toggler" type="button" data-bs-toggle="collapse" data-bs-target="#navbarCollapse" aria-controls="navbarCollapse" aria-expanded="false" aria-label="Toggle navigation">
      <span class="navbar-toggler-icon"></span>
    </button>
  </div>
</nav>

<nav class="navbar navbar-expand-md navbar-dark bg-dark bg-vivid mt-2">
  <div class="container-fluid">
    <a class="navbar-brand" href="#">Navbar (cusom background class)</a>
    <button class="navbar-toggler" type="button" data-bs-toggle="collapse" data-bs-target="#navbarCollapse" aria-controls="navbarCollapse" aria-expanded="false" aria-label="Toggle navigation">
      <span class="navbar-toggler-icon"></span>
    </button>
  </div>
</nav>

Similar questions

If you have not found the answer to your question or you are interested in this topic, then look at other similar questions below or use the search

Choose a particular form when the dropdown option is changed

I have two forms that I would like to display based on the selection from a dropdown menu. For example, if "Form1" is selected from the dropdown, then Form1 should be displayed. If "Form2" is selected, then Form2 should be displayed. Can anyone suggest h ...

javascriptjqueryhtml

Issue with AJAX callback function closing too quickly

I am having an issue with a function in my ajax callback that displays a div with a Bootstrap alert inside. The problem is that it only stays visible for about half a second before disappearing. I would like it to remain visible for 2 seconds. I have set a ...

javascriptjqueryajaxtwitter-bootstrap

Executing various onclick functions - Text Display

I've developed a code that includes onclick events to change the color of buttons and prevent them from being clicked twice. Additionally, I am looking to have data added to a table column/row when a button is clicked. For example, clicking button 3 s ...

javascripthtmlcss

Button Click Not Allowing Webpage Scroll

I am currently in the process of developing a website that aims to incorporate a significant amount of motion and interactivity. The concept I have devised involves a scenario where clicking on a button from the "main menu" will trigger a horizontal and ve ...

javascriptjqueryhtmlcss

The datapicker feature permits the selection of dates that are considered invalid

If a user does not know the exact date, how can I allow them to input something like '99/99/9999'? $('#date').datepicker({ language: "pt-BR", autoclose: true, format: 'dd/mm/yyyy', todayHighlight: true }) Whe ...

jquerytwitter-bootstrapbootstrap-datepickerdatapicker

CodeIgniter Email Function Not Sending Emails

I am having trouble sending an email with HTML data. I have a function that works fine, but when I try to print the table using print_r, it seems to be there but the issue lies in the message part. Can someone please help me troubleshoot this? Here is the ...

phphtmlcodeigniteremail

Enlarge the size of checkboxes on Phonegap for Android

I'm currently working on a quiz application using Phonegap, incorporating HTML, JavaScript, and CSS without any additional frameworks. My problem lies in the fact that the checkboxes appear too small on Android devices. I attempted to adjust the width ...

javascriptandroidhtmlcsscordova

Alter the URL path with the help of jQuery

I developed a website with content in two different languages, each stored in separate folders named en and bn. My goal is to toggle between these folders when clicking on an href element using jQuery. <a class="eng_link " style="" href="#"> English ...

jqueryhtml

No output received after fetching data from mysql database

My goal is to fetch data from a MySQL database without the need to refresh the page. I am implementing a live search feature to retrieve information from the database based on user input. However, when I click the button after entering the name of a smartp ...

phpjqueryhtmlmysql

Could not locate the provider: $stateProvider

It's puzzling to me why this code is not recognizing the $stateProvider. Uncaught Error: [$injector:modulerr] Failed to instantiate module app due to: Error: [$injector:unpr] Unknown provider: $stateProvider This is a simple example of a module: ( ...

javascripthtmlangularjs

Reducing text size upon cell selection in Material UI Table

Seeking assistance in identifying the CSS property responsible for subtly shrinking text within cells when selected To see the issue, simply click on a cell in this code sandbox: https://codesandbox.io/s/material-ui-table-virtualized-t2xkt IMPORTANT: se ...

cssreactjsmaterial-ui

How can I style the inner div by adding a class to the first div?

In my project, I have a list of elements that are generated dynamically, all styled the same way but with different content. The first element has a specific styling, and if it doesn't render, I want the second element to inherit that styling. < ...

javascriptjqueryhtmlcss

Is there a way to prevent Bootstrap 4's grid system from splitting column content when resizing the browser window?

Just delving into Bootstrap's grid system for the first time here, so bear with me if this sounds silly. My goal is to create a 3 column page that is responsive, featuring an image and a Spotify player in each column. Everything looks good on a full ...

htmlcssbootstrap-4

Can a JavaScript function be used with images to operate across multiple elements?

How can I make a function work on multiple elements? let image = document.getElementById("opacityLink"); image.onmouseover = function() { image.style = "opacity:0.9"; }; image.onmouseout = function() { image.style = "opacity:1"; }; <div class=" ...

javascripthtmlcssimage

Using display:inline-block will increase the vertical spacing

I am currently dealing with the following HTML and CSS setup: * { -webkit-box-sizing: border-box; -moz-box-sizing: border-box; box-sizing: border-box; } body { margin: 0; } .row { background-color: red; /* display: inline-block; */ } ul { ...

htmlcsspadding

What is the process for implementing JavaScript in Django?

I'm a newcomer to this and although I've tried searching on Google, I haven't found a solution. I'm facing an issue where I can include JavaScript within the HTML file, but it doesn't work when I try to separate it into its own fil ...

javascriptpythonhtmldjango

The way Firefox interprets em values is incorrect

Currently, I am working on an adaptive website where I have used em values for everything. However, I am facing discrepancies between Chrome and Firefox when it comes to interpreting em values. The website can be found at dev.morodeer.ru/stroymoidom and ...

cssfirefox

What is the purpose of the bold line down the left side of every HTML calendar?

Welcome to a calendar layout designed with flexbox: Check it out here Do you notice the thicker lines below the heading rows and want to remove them? Here is how you can modify the HTML & CSS code: #calendars-container { text-align: center; font-f ...

htmlcssflexboxoutline

Tips for accessing the ID, Name and Class of a specific DIV element with the class "Extreme" upon clicking a button

Need help finding the ID of the outermost parent div <div class="panel" id="Kudapanel"> //Top-level Div <div class="Kudapanel1" id="Kudapanel1"> </div> <div> <div> <input type="button" id="yo ...

javascriptjqueryhtmlcss

There seems to be an issue with Affix functionality in Bootstrap 4 (alpha version)

As detailed in the Bootstrap 3 documentation, I have included the following attributes in a navbar: <nav class="navbar no-margin-bottom" data-spy="affix" data-offset-top="90" > ... </nav> Unfortunately, when scrolling down the page with Boots ...

javascriptcsstwitter-bootstrapaffixbootstrap-4