<分区>
- 在此示例中，一行中有两列
col-sm-3，col-sm-8。 最小化窗口后(引用屏幕截图)两列粘在一起 对彼此。 -还有第二列，即 col-sm-8 在 sm 断点处没有占据全宽。
注意:要在 sm 断点处的列之间留出主要空间，也想要完整 col-sm-8 的大小。
标签 html css bootstrap-4
<分区>
col-sm-3，col-sm-8。最小化窗口后(引用屏幕截图)两列粘在一起 对彼此。 -还有第二列，即 col-sm-8 在 sm 断点处没有占据全宽。
注意:要在 sm 断点处的列之间留出主要空间，也想要完整 col-sm-8 的大小。
最佳答案
你只需要添加类然后 col-sm-8将是全宽，也将是 sm 断点处的列之间的空间
在 col-sm-8 上添加以下类(class)分区 only :
<div class="col-sm-8 mt-3 mt-md-0 p-0 px-md-3">
document.getElementsByTagName("h1")[0].style.fontSize = "80px";<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title>Document</title>
<link rel="stylesheet"
href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/css/bootstrap.min.css"
integrity="sha384-Gn5384xqQ1aoWXA+058RXPxPg6fy4IWvTNh0E263XmFcJlSAwiGgFAW/dAiS6JXm"
crossorigin="anonymous"
>
<!-- <script src="https://ajax.googleapis.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script> -->
<style>
.nav-pills .nav-link.active{
color: rgb(12, 11, 11) !important;
background-color: rgb(233, 233, 233);
}
html {
position: relative;
min-height: 100%;
}
body {
/* Margin bottom by footer height */
margin-bottom: 60px;
}
.footer {
position: absolute;
bottom: 0;
width: 100%;
/* Set the fixed height of the footer here */
height: 60px;
line-height: 60px; /* Vertically center the text there */
background-color: #1d1c1c;
}
/* Custom page CSS
-------------------------------------------------- */
/* Not required for template or sticky footer method. */
body > .container {
padding: 60px 15px 0;
}
.footer > .container {
padding-right: 15px;
padding-left: 15px;
}
code {
font-size: 80%;
}
</style>
</head>
<body>
<header>
<nav class="navbar navbar-expand-lg navbar-dark bg-dark">
<a class="navbar-brand" href="#">Navbar</a>
<button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarSupportedContent" aria-controls="navbarSupportedContent" aria-expanded="false" aria-label="Toggle navigation">
<span class="navbar-toggler-icon"></span>
</button>
<div class="collapse navbar-collapse" id="navbarSupportedContent">
<ul class="navbar-nav mr-auto">
<li class="nav-item active">
<a class="nav-link" href="#">Home <span class="sr-only">(current)</span></a>
</li>
<li class="nav-item">
<a class="nav-link" href="#">Link</a>
</li>
<li class="nav-item dropdown">
<a class="nav-link dropdown-toggle" href="#" id="navbarDropdown" role="button" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
Dropdown
</a>
<div class="dropdown-menu" aria-labelledby="navbarDropdown">
<a class="dropdown-item" href="#">Action</a>
<a class="dropdown-item" href="#">Another action</a>
<div class="dropdown-divider"></div>
<a class="dropdown-item" href="#">Something else here</a>
</div>
</li>
<li class="nav-item">
<a class="nav-link disabled" href="#">Disabled</a>
</li>
</ul>
<form class="form-inline my-2 my-lg-0">
<input class="form-control mr-sm-2" type="search" placeholder="Search" aria-label="Search">
<button class="btn btn-outline-success my-2 my-sm-0" type="submit">Search</button>
</form>
</div>
</nav>
</header>
<main role="main" class="container">
<div class="row">
<div class="col-sm-3 text-white bg-secondary pt-2 pb-2" >
<div class="nav flex-column nav-pills" id="v-pills-tab" role="tablist" aria-orientation="vertical">
<a class="nav-link text-light active" id="v-pills-home-tab" data-toggle="pill" href="#v-pills-home" role="tab" aria-controls="v-pills-home" aria-selected="true">Profile</a>
<a class="nav-link text-light " id="v-pills-messages-tab" data-toggle="pill" href="#v-pills-messages" role="tab" aria-controls="v-pills-messages" aria-selected="false">Messages</a>
<a class="nav-link text-light " id="v-pills-settings-tab" data-toggle="pill" href="#v-pills-settings" role="tab" aria-controls="v-pills-settings" aria-selected="false">Settings</a>
</div>
</div>
<div class="col-sm-8 mt-3 mt-md-0 p-0 px-md-3">
<div class="tab-content" id="v-pills-tabContent">
<div class="tab-pane fade show active " id="v-pills-home" role="tabpanel" aria-labelledby="v-pills-home-tab">
<div class="card">
<div class="card-header card-title"><b>Profile</b></div>
<div class="card-body">Panel Content</div>
</div>
</div>
<div class="tab-pane fade" id="v-pills-messages" role="tabpanel" aria-labelledby="v-pills-messages-tab">
<div class="card">
<div class="card-header card-title"><b>Messages</b></div>
<div class="card-body">Panel Content</div>
</div>
</div>
<div class="tab-pane fade" id="v-pills-settings" role="tabpanel" aria-labelledby="v-pills-settings-tab">
<div class="card">
<div class="card-header card-title"><b>Settings</b></div>
<div class="card-body">Panel Content</div>
</div>
</div>
</div>
</div>
</div>
</main>
<footer class="footer">
<div class="container">
<span class="text-muted">Place sticky footer content here.</span>
</div>
</footer>
<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>关于html - 在小型设备中使引导列之间的空间对齐一个在另一个下面，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/55038695/