我想创建一个类似于 this page 的网格系统使用 Bootstrap 4。我想在 col-sm-4 中创建一个方形框，并在相同高度的 col-sm-8 中创建一个较长的矩形。我无法创建一个响应式的方形框。我怎样才能做到这一点？!
当前代码:
<div class="container">
<div class="row section-box">
<div class="col-sm-4 text-center description-text">
first square box.
</div>
<div class="col-sm-8 description-image">
second rectangle box.
</div>
</div>
</div>
我尝试过的事情:
请您参考如下方法:
您可以使用 Bootstrap 4 embed-responsive上课，就完成了
<!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://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/css/bootstrap.min.css" integrity="sha384-Gn5384xqQ1aoWXA+058RXPxPg6fy4IWvTNh0E263XmFcJlSAwiGgFAW/dAiS6JXm" crossorigin="anonymous">
<title>Hello, world!</title>
</head>
<body>
<div class="container">
<div class="row m-5">
<div class="col-1">
<div class="embed-responsive embed-responsive-1by1 text-center">
<div class="embed-responsive-item bg-primary">col-1</div>
</div>
</div>
</div>
<div class="row m-5">
<div class="col-2">
<div class="embed-responsive embed-responsive-1by1 text-center">
<div class="embed-responsive-item bg-primary">col-2</div>
</div>
</div>
</div>
<div class="row m-5">
<div class="col-3">
<div class="embed-responsive embed-responsive-1by1 text-center">
<div class="embed-responsive-item bg-primary">col-3</div>
</div>
</div>
</div>
<div class="row m-5">
<div class="col-4">
<div class="embed-responsive embed-responsive-1by1 text-center">
<div class="embed-responsive-item bg-primary">col-4</div>
</div>
</div>
</div>
<div class="row m-5">
<div class="col-5">
<div class="embed-responsive embed-responsive-1by1 text-center">
<div class="embed-responsive-item bg-primary">col-5</div>
</div>
</div>
</div>
<div class="row m-5">
<div class="col-6">
<div class="embed-responsive embed-responsive-1by1 text-center">
<div class="embed-responsive-item bg-primary">col-6</div>
</div>
</div>
</div>
<div class="row m-5">
<div class="col-7">
<div class="embed-responsive embed-responsive-1by1 text-center">
<div class="embed-responsive-item bg-primary">col-7</div>
</div>
</div>
</div>
<div class="row m-5">
<div class="col-8">
<div class="embed-responsive embed-responsive-1by1 text-center">
<div class="embed-responsive-item bg-primary">col-8</div>
</div>
</div>
</div>
<div class="row m-5">
<div class="col-9">
<div class="embed-responsive embed-responsive-1by1 text-center">
<div class="embed-responsive-item bg-primary">col-9</div>
</div>
</div>
</div>
<div class="row m-5">
<div class="col-10">
<div class="embed-responsive embed-responsive-1by1 text-center">
<div class="embed-responsive-item bg-primary">col-10</div>
</div>
</div>
</div>
<div class="row m-5">
<div class="col-11">
<div class="embed-responsive embed-responsive-1by1 text-center">
<div class="embed-responsive-item bg-primary">col-11</div>
</div>
</div>
</div>
<div class="row m-5">
<div class="col-12">
<div class="embed-responsive embed-responsive-1by1 text-center">
<div class="embed-responsive-item bg-primary">col-12</div>
</div>
</div>
</div>
</div>
<!-- Optional JavaScript -->
<!-- jQuery first, then Popper.js, then Bootstrap JS -->
<script src="https://code.jquery.com/jquery-3.2.1.slim.min.js" integrity="sha384-KJ3o2DKtIkvYIK3UENzmM7KCkRr/rE9/Qpg6aAZGJwFDMVNA/GpGFF93hXpG5KkN" crossorigin="anonymous"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.12.9/umd/popper.min.js" integrity="sha384-ApNbgh9B+Y1QKtv3Rn7W3mgPxhU9K/ScQsAP7hUibX39j7fakFPskvXusvfa0b4Q" crossorigin="anonymous"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/js/bootstrap.min.js" integrity="sha384-JZR6Spejh4U02d8jOt6vLEHfe/JQGiRRSQQxSfFWpi1MquVdAyjUar5+76PVCmYl" crossorigin="anonymous"></script>
</body>
</html>
