Bootstrap 5位置固定顶部
Bootstrap 5 Position Fixed top是用来将元素的位置设置在视口的顶部。我们可以使用一些CSS属性来显示固定顶部位置的效果。
Position Fixed Top Class:
- fixed-top: 该类用于将元素的位置设置为视口的顶部。
语法:
<div class="fixed-top">
Content
</div>
例子1:在这个例子中,我们将创建一个固定宽度和高度的div元素,并将其位置设置为固定的顶部。
<!DOCTYPE html>
<html>
<head>
<title>Bootstrap 5 Position Fixed top</title>
<link href="https://cdn.jsdelivr.net/npm/bootstrap@5.0.2/dist/css/bootstrap.min.css"
rel="stylesheet"
integrity="sha384-EVSTQN3/azprG1Anm3QDgpJLIm9Nao0Yz1ztcQTwFspd3yD65VohhpuuCOmLASjC"
crossorigin="anonymous">
<script src="https://cdn.jsdelivr.net/npm/bootstrap@5.0.2/dist/js/bootstrap.bundle.min.js"
integrity="sha384-MrcW6ZMFYlzcLA8Nl+NtUVF0sA7MsXsP1UyJoMp4YLEuNSfAP+JcXn/tWtIaxVXM"
crossorigin="anonymous">
</script>
<style>
.container {
margin-top: 150px;
}
.box {
width: 250px;
height: 100px;
border: 1px solid #312d2d;
margin: 0 auto;
}
</style>
</head>
<body>
<div class="container text-center">
<h1 class="text-success">GeeksforGeeks</h1>
<h3>Bootstrap 5 Position Fixed top</h3>
<div class="box fixed-top"></div>
</div>
</body>
</html>
输出:
例2:在这个例子中,我们将创建一个固定宽度和高度的图像元素,并将其位置设置为固定的顶部。
<!DOCTYPE html>
<html>
<head>
<title>Bootstrap 5 Position Fixed top</title>
<link href="https://cdn.jsdelivr.net/npm/bootstrap@5.0.2/dist/css/bootstrap.min.css"
rel="stylesheet"
integrity="sha384-EVSTQN3/azprG1Anm3QDgpJLIm9Nao0Yz1ztcQTwFspd3yD65VohhpuuCOmLASjC"
crossorigin="anonymous">
<script src="https://cdn.jsdelivr.net/npm/bootstrap@5.0.2/dist/js/bootstrap.bundle.min.js"
integrity="sha384-MrcW6ZMFYlzcLA8Nl+NtUVF0sA7MsXsP1UyJoMp4YLEuNSfAP+JcXn/tWtIaxVXM"
crossorigin="anonymous">
</script>
<style>
.container {
margin-top: 250px;
}
img {
margin: auto;
}
</style>
</head>
<body>
<div class="container text-center">
<h1 class="text-success">GeeksforGeeks</h1>
<h3>Bootstrap 5 Position Fixed top</h3>
<img src=
"https://media.geeksforgeeks.org/wp-content/cdn-uploads/20190710102234/download3.png"
class="fixed-top" alt="GFG Logo">
</div>
</body>
</html>
输出: