please help me iam new to css
I am not able to change my navbar color to red when I scroll
I think the problem is with the jquery iam using please correct me if iam wrong
I am using bootstrap 4
below is the Html I am using :
<!doctype html>
<html lang="en">
<head>
<!-- Required meta tags -->
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
<!-- Google Font -->
<link href="https://fonts.googleapis.com/css?family=Nunito:200,300,400,700" rel="stylesheet">
<!-- Bootstrap CSS -->
<link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.1.3/css/bootstrap.min.css" integrity="sha384-MCw98/SFnGE8fJT3GXwEOngsV7Zt27NXFoaoApmYm81iuXoPkFOJwJ8ERdknLPMO" crossorigin="anonymous">
<!-- Custom CSS -->
<link rel="stylesheet" href="app.css">
<title>Museum of Candy</title>
</head>
<body>
<nav id="MainNavbar" class="navbar navbar-expand-md navbar-dark py-0 fixed-top">
<a href="#" class="navbar-brand">CANDY</a>
<button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarNavAltMarkup" aria-controls="navbarNavAltMarkup" aria-expanded="false" aria-label="Toggle navigation">
<span class="navbar-toggler-icon"></span>
</button>
<div class="collapse navbar-collapse" id="navbarNavAltMarkup">
<div class="navbar-nav">
<a class="nav-link" href="#">HOME</a>
<a class="nav-link" href="#">ABOUT</a>
<a class="nav-link" href="#">TICKETS</a>
</div>
</div>
</nav>
<div id="text" class="container-fluid px-0">
<div class="row align-items-center">
<div class="col-lg-6 text-white text-center d-none d-lg-block mt-5">
<h1 class="">MUSEUM<span class="slash">/</span>OF<span class="slash">/</span>CANDY</h1>
<h1 class="">MUSEUM<span class="slash">/</span>OF<span class="slash">/</span>CANDY</h1>
<h1 class="">MUSEUM<span class="slash">/</span>OF<span class="slash">/</span>CANDY</h1>
<h1 class="">MUSEUM<span class="slash">/</span>OF<span class="slash">/</span>CANDY</h1>
<h1 class="">MUSEUM<span class="slash">/</span>OF<span class="slash">/</span>CANDY</h1>
<h1 class="">MUSEUM<span class="slash">/</span>OF<span class="slash">/</span>CANDY</h1>
<h1 class="">MUSEUM<span class="slash">/</span>OF<span class="slash">/</span>CANDY</h1>
</div>
<div class="col-lg-6">
<img src="imgs/hand2.png" alt="hand image" class="img-fluid">
</div>
</div>
</div>
<section class="container-fluid px-0">
<div class="row align-items-center content">
<div class="col-md-6 order-md-1 order-2">
<img src="imgs/milk.png" alt="" class="img-fluid">
</div>
<!-- text-center here aligns every element inside the div to newline and the text inside it to middle that is the reason we use text center instead of "d-flex justify-content-center" class -->
<div class="col-md-6 text-center order-md-2 order-1">
<div class="row justify-content-center">
<div class="col-10 col-lg-8 blurb mb-md-0 mb-5">
<h2 class="">MUSEUM OF CANDY</h2>
<img src="imgs/lolli_icon.png" alt="" class="d-none d-lg-inline">
<p class="lead">Lorem ipsum dolor, sit amet consectetur adipisicing elit. At enim nihil dolorum vitae magni est, temporibus deleniti vero, eligendi consequuntur quibusdam assumenda sapiente repellat.</p>
</div>
</div>
</div>
</div>
<div class="row align-items-center content">
<div class="col-md-6">
<div class="row justify-content-center">
<div class="col-10 col-lg-8 text-center blurb mb-md-0 mb-5">
<h2 class="">MUSEUM OF CANDY</h2>
<img src="imgs/lolli_icon.png" alt="" class="d-none d-lg-inline">
<p class="lead">Lorem ipsum dolor, sit amet consectetur adipisicing elit. At enim nihil dolorum vitae magni est, temporibus deleniti vero, eligendi consequuntur quibusdam assumenda sapiente repellat.</p>
</div>
</div>
</div>
<!-- text-center here aligns every element inside the div to newline and the text inside it to middle that is the reason we use text center instead of "d-flex justify-content-center" class -->
<div class="col-md-6 text-center">
<img src="imgs/gumball.png" alt="" class="img-fluid">
</div>
</div>
<div class="row align-items-center content">
<div class="col-md-6 order-md-1 order-2">
<img src="imgs/sprinkles.png" alt="" class="img-fluid">
</div>
<!-- text-center here aligns every element inside the div to newline and the text inside it to middle that is the reason we use text center instead of "d-flex justify-content-center" class -->
<div class="col-md-6 text-center order-md-2 order-1">
<div class="row justify-content-center">
<div class="col-10 col-lg-8 blurb mb-md-0 mb-5">
<h2 class="">MUSEUM OF CANDY</h2>
<img src="imgs/lolli_icon.png" alt="" class="d-none d-lg-inline">
<p class="lead">Lorem ipsum dolor, sit amet consectetur adipisicing elit. At enim nihil dolorum vitae magni est, temporibus deleniti vero, eligendi consequuntur quibusdam assumenda sapiente repellat.</p>
</div>
</div>
</div>
</div>
</section>
<!-- Optional JavaScript -->
<!-- jQuery first, then Popper.js, then Bootstrap JS -->
<script src="https://code.jquery.com/jquery-3.3.1.slim.min.js" integrity="sha384-q8i/X 965DzO0rT7abK41JStQIAqVgRVzpbzo5smXKp4YfRvH 8abtTE1Pi6jizo" crossorigin="anonymous"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.14.3/umd/popper.min.js" integrity="sha384-ZMP7rVo3mIykV 2 9J3UJ46jBk0WLaUAdn689aCwoqbBJiSnjAK/l8WvCWPIPm49" crossorigin="anonymous"></script>
<script src="https://stackpath.bootstrapcdn.com/bootstrap/4.1.3/js/bootstrap.min.js" integrity="sha384-ChfqqxuZUCnJSK3 MXmPNIyE6ZbWh2IMqE241rYiqJxyMiZ6OW/JmZQ5stwEULTy" crossorigin="anonymous"></script>
<script>
$(function () {
$(document).scroll(function () {
var $nav = $("#mainNavbar");
$nav.toggleClass("scrolled", $(this).scrollTop() > $nav.height());
});
});
</script>
</body>
</html>
I have used some css of my own
And my css is as follows:
body{
background-color: #f5d9d5;
font-family: "Nunito";
}
#MainNavbar{
font-size: 1.5rem;
font-weight: 100;
}
#MainNavbar .navbar-brand{
color: #ea1c2c;
font-size: 1.5rem;
}
#MainNavbar .nav-link{
color: white;
}
#MainNavbar .nav-link:hover{
color: #ea1c2c;
}
#text .slash{
color: #ea1c2c;
}
h1{
font-weight: 100;
font-size: 4rem;
}
.blurb h2{
color: #ea1c2c;
font-weight: 100;
font-size: 2.5rem;
}
.blurb p{
font-weight: 100;
font-size: 1.125rem;
line-height: 2;
color: #f498b8;
}
.content{
margin-top: 100px;
margin-bottom: 100px;
}
.navbar.scrolled {
background-color: red
}
@media (max-width:1200px){
h1{
font-weight: 100;
font-size: 3rem;
}
.blurb h2{
font-size:2rem;
}
}
click the link below to see my project folder structure
here is my project folder structure
CodePudding user response：
You will need JavaScript to do this, check out this pen.
// Logic
header {
width: 100%;
min-height: 3em;
background-color: #eee;
}
html:not([data-scroll='0']) {
body {
padding-top: 3em;
}
header {
position: fixed;
top: 0;
background-color: red;
box-shadow: 0 0 .5em rgba(0, 0, 0, .5);
}
}
// Cosmetics
header {
box-sizing: border-box;
padding: 1em;
transition: background-color .25s;
}
main {
padding:0 1em;
}
Js
> // The debounce function receives our function as a parameter const
> debounce = (fn) => {
>
> // This holds the requestAnimationFrame reference, so we can cancel
> it if we wish let frame;
>
> // The debounce function returns a new function that can receive a
> variable number of arguments return (...params) => {
>
> // If the frame variable has been defined, clear it now, and queue for next frame
> if (frame) {
> cancelAnimationFrame(frame);
> }
>
> // Queue our function call for the next frame
> frame = requestAnimationFrame(() => {
>
> // Call our function and pass any params we received
> fn(...params);
> });
>
> } };
>
>
> // Reads out the scroll position and stores it in the data attribute
> // so we can use it in our stylesheets const storeScroll = () => {
> document.documentElement.dataset.scroll = window.scrollY; }
>
> // Listen for new scroll events, here we debounce our `storeScroll`
> function document.addEventListener('scroll', debounce(storeScroll), {
> passive: true });
>
> // Update scroll position for first time storeScroll();