在Bootstrap 4的不同屏幕上从头开始对齐单行项目
在Bootstrap4中使用.align-items-*-start类在不同屏幕上从开始对齐项目的单行。
对于不同的屏幕尺寸，将该类用作-
在小屏幕上对齐单行项目
<div class="d-flex flex-wrap align-items-sm-start bg-secondary" style="height:200px"> <div class="p-2 border">Product 1</div> <div class="p-2 border">Product 2</div> <div class="p-2 border">Product 3</div> <div class="p-2 border">Product 4</div> </div>
在中等屏幕上对齐单行项目
<div class="d-flex flex-wrap align-items-md-start bg-primary" style="height:200px"> <div class="p-2 border">Product 1</div> <div class="p-2 border">Product 2</div> <div class="p-2 border">Product 3</div> <div class="p-2 border">Product 4</div> </div>
在大屏幕上对齐单行项目
<div class="d-flex flex-wrap align-items-lg-start bg-info" style="height:200px"> <div class="p-2 border">Product 1</div> <div class="p-2 border">Product 2</div> <div class="p-2 border">Product 3</div> <div class="p-2 border">Product 4</div> </div>
以下是在不同屏幕上从头开始对齐单行项目的示例-
示例
<!DOCTYPE html>
<html>
<head>
<title>Bootstrap Example</title>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.1.0/css/bootstrap.min.css">
<script src="https://cdn.staticfile.org/jquery/3.3.1/jquery.min.js"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.1.0/js/bootstrap.min.js"></script>
</head>
<body>
<div class="container mt-3">
<h1>Align Flex Items on a single row</h1>
<div class="d-flex flex-wrap align-items-start bg-primary" style="height:200px">
<div class="p-2 border">Product 1</div>
<div class="p-2 border">Product 2</div>
<div class="p-2 border">Product 3</div>
<div class="p-2 border">Product 4</div>
</div>
<h2>Small Screen Size</h2>
<div class="d-flex flex-wrap align-items-sm-start bg-secondary" style="height:200px">
<div class="p-2 border">Product 1</div>
<div class="p-2 border">Product 2</div>
<div class="p-2 border">Product 3</div>
<div class="p-2 border">Product 4</div>
</div>
<h2>Medium Screen Size</h2>
<div class="d-flex flex-wrap align-items-md-start bg-primary" style="height:200px">
<div class="p-2 border">Product 1</div>
<div class="p-2 border">Product 2</div>
<div class="p-2 border">Product 3</div>
<div class="p-2 border">Product 4</div>
</div>
<h2>Large Screen Size</h2>
<div class="d-flex flex-wrap align-items-lg-start bg-info" style="height:200px">
<div class="p-2 border">Product 1</div>
<div class="p-2 border">Product 2</div>
<div class="p-2 border">Product 3</div>
<div class="p-2 border">Product 4</div>
</div>
</div>
</body>
</html>