如何在 Bootstrap 中使用网格断点类？
要获取网格断点值，我们可以使用 bootstrap 的 display 属性。使用响应显示实用程序类更改 display 属性值。根据需要，可以针对不同的影响组合课程。
- 。xs 的 d-{value}
- 。xl、lg、md 和 sm 的 d-{断点}-{值} 。
这里值可以是无、内联、内联块、块、表、表单元格、表行、flex、内联 flex 中的一个。
媒体查询会影响具有给定断点或更大断点的屏幕宽度。例:。d-MD-无设置显示:无；在 md、lg 和 xl 屏幕上。
网格断点是
- xs: < 576px 超小玩意(人像手机，低于 576px)。
- sm: > =576px 小玩意(风景手机，576px 及以上)。
- md: > =768px 中型小工具(平板电脑，768px 及以上)。
- lg: > =992px 大型小玩意(台式机，992px 及以上)。
- xl: > =1200px 超大型小工具(大型台式机，1200px 及以上)。
使用遮盖部件。d-none 级或者之一。d-{sm，md，lg，XL }-无类，适用于任何响应屏幕变化。
要在给定的屏幕尺寸间隔内显示组件，您可以组合一个。d-*-无类带。d--类，举例说明。没有。d-MD-街区。d-xl-none 将覆盖除中大型小工具外的所有屏幕尺寸的组件。
例 1:
超文本标记语言
<!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">
<!-- Bootstrap CSS -->
<link rel="stylesheet" href=
"https://stackpath.bootstrapcdn.com/bootstrap/4.5.0/css/bootstrap.min.css"
integrity=
"sha384-9aIt2nRpC12Uk9gS9baDl411NQApFmC26EwAOH8WgZl5MYYxFfc+NcPb1dKGj7Sk"
crossorigin="anonymous">
<!-- Optional JavaScript -->
<!-- jQuery first, then Popper.js,
then Bootstrap JS -->
<script src="https://code.jquery.com/jquery-3.5.1.slim.min.js"
integrity=
"sha384-DfXdz2htPH0lsSSs5nCTpuj/zy4C+OGpamoFVy38MVBnE+IbbVYUew+OrCXaRkfj"
crossorigin="anonymous">
</script>
<script src=
"https://cdn.jsdelivr.net/npm/popper.js@1.16.0/dist/umd/popper.min.js"
integrity=
"sha384-Q6E9RHvbIyZFJoft+2mJbHaEWldlvI9IOYy5n3zV9zzTtmI3UksdQRVvoxMfooAo"
crossorigin="anonymous">
</script>
<script src=
"https://stackpath.bootstrapcdn.com/bootstrap/4.5.0/js/bootstrap.min.js"
integrity=
"sha384-OgVRvuATP1z7JjHLkuOU7Xw704+h835Lr+6QL9UvYjZE3Ipu6Tp75j7Bh/kR0JKI"
crossorigin="anonymous">
</script>
<title>bootstrap4 | grid-breakpoint</title>
</head>
<body>
<center>
<h1 style="color: green">GeeksforGeeks</h1>
<div class="d-inline p-2 bg-primary text-white">
Visible on all screen-size
</div>
<div class="d-inline d-sm-none p-2 bg-dark
text-white">
Only Visible on xs (less
than 576px) screen-size
</div>
<div class="d-none d-sm-inline d-md-none
p-2 bg-success text-white">
Only Visible on sm (767px to
576px) screen-size
</div>
<div class="d-none d-md-inline d-lg-none
p-2 bg-danger text-white">
Only Visible on md (991px
to 768px) screen-size
</div>
<div class="d-none d-lg-inline d-xl-none
p-2 bg-warning text-white">
Only Visible on lg (1199px
to 992px) screen-size
</div>
<div class="d-none d-xl-inline p-2
bg-light text-black">
Only Visible on xl (>=1200px)
screen-size
</div>
</center>
</body>
</html>
输出:
例 2:
超文本标记语言
<!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">
<!-- Bootstrap CSS -->
<link rel="stylesheet" href=
"https://stackpath.bootstrapcdn.com/bootstrap/4.5.0/css/bootstrap.min.css"
integrity=
"sha384-9aIt2nRpC12Uk9gS9baDl411NQApFmC26EwAOH8WgZl5MYYxFfc+NcPb1dKGj7Sk"
crossorigin="anonymous">
<!-- Optional JavaScript -->
<!-- jQuery first, then Popper.js,
then Bootstrap JS -->
<script src="https://code.jquery.com/jquery-3.5.1.slim.min.js"
integrity=
"sha384-DfXdz2htPH0lsSSs5nCTpuj/zy4C+OGpamoFVy38MVBnE+IbbVYUew+OrCXaRkfj"
crossorigin="anonymous">
</script>
<script src=
"https://cdn.jsdelivr.net/npm/popper.js@1.16.0/dist/umd/popper.min.js"
integrity=
"sha384-Q6E9RHvbIyZFJoft+2mJbHaEWldlvI9IOYy5n3zV9zzTtmI3UksdQRVvoxMfooAo"
crossorigin="anonymous">
</script>
<script src=
"https://stackpath.bootstrapcdn.com/bootstrap/4.5.0/js/bootstrap.min.js"
integrity=
"sha384-OgVRvuATP1z7JjHLkuOU7Xw704+h835Lr+6QL9UvYjZE3Ipu6Tp75j7Bh/kR0JKI"
crossorigin="anonymous">
</script>
<title>Bootstrap4 grid-breakpoint</title>
</head>
<body>
<center>
<h1 style="color: green">
GeeksforGeeks
</h1>
<div class="d-block p-2 bg-primary
text-white">
Visible on all screen-size
</div>
<div class="d-none d-sm-block p-2
bg-dark text-white">
Hidden on xs (less than
576px) screen-size
</div>
<div class="d-none d-md-block p-2
bg-success text-white">
Hidden on sm (767px and
less) screen-size
</div>
<div class="d-none d-lg-block p-2
bg-danger text-white">
Hidden on md (991px and
less) screen-size
</div>
<div class="d-none d-xl-block p-2
bg-warning text-white">
Hidden on lg (1199px and
less) screen-size
</div>
<div class="d-xl-none p-2 bg-light
text-black">
Hidden only on xl (1200px
and up) screen-size
</div>
</center>
</body>
</html>
输出:
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