如何去除这个填充从红框我想黄框来到红色下没有这个填充，我使用引导4和正常的Css，请如果你有任何答案
null
body {
background-color: #ddd;
}
.box_1 {
background-color: red;
}
.box_2 {
background-color: green;
}
.box_3 {
background-color: yellow;
}
.box_4 {
background-color: blue;
}<!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://cdn.jsdelivr.net/npm/bootstrap@4.5.3/dist/css/bootstrap.min.css"
integrity="sha384-TX8t27EcRE3e/ihU7zmQxVncDAy5uIKz4rEkgIXeMed4M0jlfIDPvg6uqKI2xXr2" crossorigin="anonymous">
<title>Hello, world!</title>
</head>
<body>
<div class="container mt-5">
<div class="row">
<div class="box_1 col-md-9">
<h2>Box - 1</h2>
</div>
<div class="box_2 col-md-3">
<h2>Box - 2</h2>
<h2>Box - 2</h2>
<h2>Box - 2</h2>
</div>
</div>
<div class="row">
<div class="box_3 col-md-9">
<h2>Box - 3</h2>
</div>
<div class="box_4 col-md-3">
<h2>Box - 4</h2>
</div>
</div>
</div>
<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/bootstrap@4.5.3/dist/js/bootstrap.bundle.min.js"
integrity="sha384-ho+j7jyWK8fNQe+A12Hb8AhRq26LrZ/JpcUGGOn+Y7RsweNrtN/tE3MoK7ZeZDyx"
crossorigin="anonymous"></script>
</body>
</html>null
如何去除这个填充从红框我想黄框来到红色下没有这个填充，我使用引导4和正常的Css，请如果你有任何答案
null
.box_1 {
background-color: red;
}
.box_2 {
background-color: green;
}
.box_3 {
background-color: yellow;
}
.box_4 {
background-color: blue;
} <div class="container">
<div class="row">
<div class="box_1 col-md-9 col-sm-9">
<h2>Box - 1</h2>
</div>
<div class="box_2 col-md-3 col-sm-3">
<h2>Box - 2</h2>
<h2>Box - 2</h2>
<h2>Box - 2</h2>
</div>
</div>
<div class="row">
<div class="box_3 col-md-9 col-sm-9">
<h2>Box - 3</h2>
</div>
<div class="box_4 col-md-3 col-sm-9">
<h2>Box - 4</h2>
</div>
</div>
</div>null
在此处输入图像说明
你可以使用砖石效果。因为我不确定你是想要黄框的移动，还是红框和绿框的高度相同。如果你想把黄箱上移，你可以使用砖石效果
您的代码
<script src="https://unpkg.com/masonry-layout@4/dist/masonry.pkgd.min.js"></script>
<div class="grid">
<div class="grid-sizer"></div>
<div class="child grid-item box_1">
<h2>Box - 1</h2>
</div>
<div class="child grid-item box_2"> <br/>hello<h2>Box - 2</h2>
<h2>Box - 2</h2>
<h2>Box - 2</h2>
</div>
<div class="child grid-item box_3"> <br/>hello
<h2>Box - 3</h2>
</div>
<div class="child grid-item box_4">
<h2>Box - 4</h2>
</div>
</div>
小提琴来了。
小提琴
