我有两个列，一个侧边栏，另一个是页面。如何制作直到页面末尾的第二列？为什么它默认在中间的某个地方结束？第一列有高度相同的问题我尝试了d-block但没有工作然后我在style.css高度：100vh写它但第二列宽度：100vh没有相同的效果。
<!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">
<link rel="stylesheet" href="https://use.fontawesome.com/releases/v5.0.13/css/all.css"
integrity="sha384-DNOHZ68U8hZfKXOrtjWvjxusGo9WQnrNx2sqG0tfsghAvtVlRW3tvkXWZh58N9jp" crossorigin="anonymous">
<link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.1.1/css/bootstrap.min.css"
integrity="sha384-WskhaSGFgHYWDcbwN70/dfYBj47jz9qbsMId/iRN3ewGhXQFZCSftd1LZCfmhktB" crossorigin="anonymous">
<link href="https://fonts.googleapis.com/css?family=Open+Sans" rel="stylesheet">
<link rel="stylesheet" href="css/style.css">
<title>Control Panel</title>
</head>
<body>
<div class="container m-0 p-0">
<div class="row p-0">
<div class="sidebar col-lg-2 col-md-3 col-sm-4 d-block bg-secondary px-4 pt-2 bg-dark text-light">
<div class="d-flex align-items-start flex-column px-2">
<a href="index.html" class="navbar-brand text-white"><h4>Admin<br>Panel</h4></a>
<ul class="navbar-nav text-white">
<li class="nav-item">
<a href="index.html" class="nav-link text-white active">Dashboard</a>
</li>
<li class="nav-item">
<a href="tasks.html" class="nav-link text-white">Tasks</a>
</li>
<li class="nav-item">
<a href="categories.html" class="nav-link text-white">Categories</a>
</li>
<li class="nav-item">
<a href="users.html" class="nav-link text-white">Users</a>
</li>
</ul>
<ul class="navbar-nav text-white mt-auto">
<li class="nav-item dropdown">
<a href="" class="nav-link dropdown-toggle text-white" data-toggle="dropdown">
<i class="fas fa-user"></i> User01
</a>
<div class="dropdown-menu">
<a href="profile.html" class="dropdown-item"><i class="fas fa-user-circle"></i> Profile</a>
<a href="settings.html" class="dropdown-item"><i class="fas fa-cog"></i> Settings</a>
</div>
</li>
<li class="nav-item">
<a href="login.html" class="nav-link text-white">
<i class="fas fa-sign-out-alt"></i> Logout
</a>
</li>
</ul>
</div>
</div>
<div class="page col-lg-10 col-md-9 col-sm-8 p-0">
<header id="main-header" class="py-2 bg-info text-white">
<div class="container">
<div class="row">
<div class="col-md-6">
<h1><i class="fas fa-cog"></i> Dashboard</h1>
</div>
</div>
</div>
</header>
<section id="actions" class="py-4 mb-4 bg-light">
<div class="container">
<div class="row">
<div class="col-md-3">
<a href="#" class="btn btn-outline-primary btn-block" data-toggle="modal" data-target="#addTaskModal">
<i class="fas fa-plus"></i> Add Task
</a>
</div>
<div class="col-md-3">
<a href="#" class="btn btn-outline-warning btn-block" data-toggle="modal"
data-target="#addCategoryModal">
<i class="fas fa-plus"></i> Add Category
</a>
</div>
<div class="col-md-3">
<a href="#" class="btn btn-outline-success btn-block" data-toggle="modal" data-target="#addUserModal">
<i class="fas fa-plus"></i> Add User
</a>
</div>
</div>
</div>
</section>
<!-- MODALS -->
<!-- Task -->
<div class="modal fade" id="addTaskModal">
<div class="modal-dialog modal-lg">
<div class="modal-content">
<div class="modal-header bg-primary">
<h5 class="modal-title text-white">Add Task</h5>
<button class="close" data-dismiss="modal">
<span>×</span>
</button>
</div>
<div class="modal-body">
<form>
<div class="form-group">
<label for="title">Title</label>
<input type="text" class="form-control">
</div>
<div class="form-group">
<label for="category">Category</label>
<select class="form-control">
<option value="1">Development</option>
<option value="2">Design</option>
<option value="3">Support</option>
<option value="4">Management</option>
</select>
</div>
<div class="form-group">
<label for="image">Upload Image</label>
<div class="custom-file">
<input type="file" class="custom-file-input" id="image">
<label for="image" class="custom-file-label">Browse Image</label>
</div>
<small class="form-text text-muted">Max 3mb</small>
</div>
<div class="form-group">
<label for="description">Task Description</label>
<textarea name="editor" cols="30" rows="5" class="form-control"></textarea>
</div>
<div class="modal-footer">
<button class="btn bg-primary text-white">Submit</button>
<button class="btn bg-outline-primary text-white">Cancel</button>
</div>
</form>
</div>
</div>
</div>
</div>
<!-- Category -->
<div class="modal fade" id="addCategoryModal">
<div class="modal-dialog modal-lg">
<div class="modal-content">
<div class="modal-header bg-warning">
<h5 class="modal-title text-white">Add Category</h5>
<button class="close" data-dismiss="modal">
<span>×</span>
</button>
</div>
<div class="modal-body">
<form>
<div class="form-group">
<label for="category">Current Categories</label>
<select class="form-control">
<option value="1">Development</option>
<option value="2">Design</option>
<option value="3">Support</option>
<option value="4">Management</option>
</select>
</div>
<div class="form-group">
<label for="title">New Category</label>
<input type="text" class="form-control">
</div>
<div class="modal-footer">
<button class="btn bg-warning text-white">Submit</button>
<button class="btn bg-outline-warning text-white">Cancel</button>
</div>
</form>
</div>
</div>
</div>
</div>
<!-- User -->
<div class="modal fade" id="addUserModal">
<div class="modal-dialog modal-lg">
<div class="modal-content">
<div class="modal-header bg-success">
<h5 class="modal-title text-white">Add User</h5>
<button class="close" data-dismiss="modal">
<span>×</span>
</button>
</div>
<div class="modal-body">
<form>
<div class="form-group">
<label for="title">Full Name</label>
<input type="text" class="form-control">
</div>
<div class="form-group">
<label for="title">Username</label>
<input type="text" class="form-control">
</div>
<div class="form-group">
<label for="email">Email Address</label>
<input type="email" class="form-control">
</div>
<div class="form-group">
<label for="password">Password</label>
<input type="password" class="form-control">
</div>
<div class="form-group">
<label for="password2">Confirm Password</label>
<input type="password" class="form-control">
</div>
<div class="form-group">
<label for="category">Category</label>
<select class="form-control">
<option value="1">Moderator</option>
<option value="2">Editor</option>
<option value="3">Subscriber</option>
<option value="4">Ghost</option>
</select>
</div>
<div class="modal-footer">
<button class="btn bg-success text-white">Submit</button>
<button class="btn bg-outline-success text-white">Cancel</button>
</div>
</form>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
<script src="http://code.jquery.com/jquery-3.3.1.min.js"
integrity="sha256-FgpCb/KJQlLNfOu91ta32o/NMZxltwRo8QtmkMRdAu8=" crossorigin="anonymous"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.14.3/umd/popper.min.js"
integrity="sha384-ZMP7rVo3mIykV+2+9J3UJ46jBk0WLaUAdn689aCwoqbBJiSnjAK/l8WvCWPIPm49"
crossorigin="anonymous"></script>
<script src="https://stackpath.bootstrapcdn.com/bootstrap/4.1.1/js/bootstrap.min.js"
integrity="sha384-smHYKdLADwkXOn1EmN1qk/HfnUcbVRZyYmZ4qpPea6sjB/pTJ0euyQp0Mk8ck+5T"
crossorigin="anonymous"></script>
<script src="https://cdn.ckeditor.com/4.11.3/standard/ckeditor.js"></script>
</body>
</html>
和css
body{
font-family: 'Open Sans', sans-serif;
padding:0;
margin:0;
}
.sidebar{
height:100vh;
}
.page{
width:100vh;
}
您依靠.container作为主要网格父级，但.container是固定宽度级别。无论您编写的自定义CSS .page都不会大于.container的宽度，它在Bootstrap使用的最高断点处最大为1140像素。
如果你把你的班级改为.container-fluid，那么它总会使用width:100%。单个更改将导致容器的宽度跨越浏览器视口的宽度。
目前还不清楚你是否也希望你的黑暗导航菜单跨越100％的高度，但这需要额外的CSS声明。我强烈建议您查看其Grid系统上的Bootstrap文档以及用于管理大小调整的flexbox实用程序。