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html - sticky-top 和 Logo 显示

转载 作者:行者123 更新时间:2023-11-28 01:35:10 25 4
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我一直在努力解决一个与在激活粘性 header 时显示 Logo 有关的问题。到目前为止我完成的菜单按预期工作,但我需要在标题变粘时以小版本显示 Logo 并使选项居中。下面是我得到的:

Menu not sticky

一旦 div 变粘,我就需要这样的东西:

enter image description here

到目前为止,这是我的代码:

.navbar {
background-color: #fff !important;
}

.navbar .navbar-nav li a {
color: #b29b72 !important;
}

.navbar .navbar-brand {
color: #b29b72 !important;
}

.navbar .navbar-brand:hover {
color: #b29b72 !important;
}

.custom-toggler .navbar-toggler-icon {
background-image: url("data:image/svg+xml;charset=utf8,%3Csvg viewBox='0 0 32 32' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath stroke='rgba(178,155,114, 0.9)' stroke-width='2' stroke-linecap='round' stroke-miterlimit='10' d='M4 8h24M4 16h24M4 24h24'/%3E%3C/svg%3E");
}


/* HOMEPAGE *****************************************************/

.video-container {
padding-right: 0px;
padding-left: 0px;
}

#splash {
position: relative;
text-align: center;
height: 300px;
background-color: #878787;
}

#splash .video {
position: relative;
height: 100%;
overflow-y: hidden;
overflow-x: hidden;
border-bottom: 1px solid #eee;
}

#splash .opaque {
opacity: 0.4;
background-color: #ffffff;
position: absolute;
top: 0;
bottom: 0;
left: 0;
right: 0;
}

.menu-options {
padding-top: 12px;
}

.menu-options a {
color: #b29b72;
font-weight: 600;
font-size: 20px;
}

#menu-row {
height: 50px;
background-color: #000000 !important;
}

.menu-options ul {
margin: 0;
padding: 0;
}

.menu-options ul li {
display: inline-block;
width: 120px;
}
<!DOCTYPE html>
<html>

<head>
<title>My Fantastic Title</title>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<script src="https://code.jquery.com/jquery-3.3.1.min.js"></script>
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/css/bootstrap.min.css">
<link rel="stylesheet" href="https://use.fontawesome.com/releases/v5.0.13/css/all.css">
<script src="https://code.jquery.com/jquery-3.2.1.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.12.9/umd/popper.min.js"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/js/bootstrap.min.js"></script>

</head>

<body>
<nav class="navbar navbar-expand-md navbar-dark bg-dark main-nav">
<div class="container">
<div class="navbar-collapse collapse nav-content order-2">
<ul class="nav navbar-nav">
<li class="nav-item">
<a class="nav-link" href="#">Menu 1</a>
</li>
<li class="nav-item">
<a class="nav-link" href="#">Menu 2</a>
</li>
<li class="nav-item">
<a class="nav-link" href="#">Menu 3</a>
</li>
<li class="nav-item">
<a class="nav-link" href="#">Menu 4</a>
</li>
</ul>
</div>
<ul class="nav navbar-nav text-nowrap flex-row mx-md-auto order-1 order-md-2">
<li class="nav-item">
<a class="nav-link" href="#"><img src="http://via.placeholder.com/200x110"></a>
</li>
<button class="navbar-toggler custom-toggler ml-2" type="button" data-toggle="collapse" data-target=".nav-content" aria-expanded="false" aria-label="Toggle navigation">
<span class="navbar-toggler-icon"></span>
</button>
</ul>
<div class="ml-auto navbar-collapse collapse nav-content order-3 order-md-3">
<ul class="ml-auto nav navbar-nav">
<li class="nav-item">
<a class="nav-link" href="#">Menu 1</a>
</li>
<li class="nav-item">
<a class="nav-link" href="#">Menu 2</a>
</li>
<li class="nav-item">
<a class="nav-link" href="#">Menu 3</a>
</li>
<li class="nav-item">
<a class="nav-link" href="#">Menu 4</a>
</li>
</ul>
</div>
</div>
</nav>
<div id="menu-row" class="sticky-top">
<div class="container">
<div class="row">
<div class="col-12 menu-options text-center">
<ul>
<li><a href="">OPTION 1</a></li>
<li><a href="">OPTION 2</a></li>
<li><a href="">OPTION 3</a></li>
</ul>
</div>
</div>
</div>
</div>
<div class="container-fluid video-container">
<div id="splash">
<div class="video">
<video autoplay="autoplay" poster="http://via.placeholder.com/1920x300" loop="loop" muted="muted" preload="auto">
<source src="" type="video/mp4">
<source src="" type="video/webm">
</video>
<div class="opaque"></div>
</div>
</div>
<div class="container">
<div class="row" style="height: 100vh;">
<div class="col-12">
</div>
</div>
</div>
</div>
</body>

</html>

最佳答案

您需要两个 Logo (大 - 标准。小 - 滚动/导航)。然后执行以下操作,将以下 JQuery 添加到您的代码中,但请确保使用特定的类名(不是我在示例中使用的类名)。

$(function() { var logo = $(".lrg-logo"); $(window).scroll(function() {
var scroll = $(window).scrollTop();

if (scroll >= 500) {
if(!logo.hasClass("sml-logo")) {
logo.hide();
logo.removeClass('lrg-logo').addClass("sml-logo").fadeIn( "slow");
}
} else {
if(!logo.hasClass("lrg-logo")) {
logo.hide();
logo.removeClass("sml-logo").addClass('lrg-logo').fadeIn( "slow");
}
}

});
});
.wrapper {
height: 2000px;
position: relative;
background: green;
}

header {
position: fixed;
width: 100%;
height: 50px;
background: grey;
}

.lrg-logo {
width: 300px;
height: 50px;
text-align: center;
background: red;
}

.sml-logo {
width: 200px;
height: 20px;
text-align: center;
background: red;
}
<script src="https://cdnjs.cloudflare.com/ajax/libs/modernizr/2.8.3/modernizr.min.js"></script>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div class="wrapper">
<header>
<div class="lrg-logo">Logo</div>
</header>
</div>

关于html - sticky-top 和 Logo 显示,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/50725225/

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