.page-wrapper {
grid-template-columns: 100%;
}
.middle-wrapper {
max-width: 960px;
margin-left: auto;
margin-right: auto;
padding: 25px;
border: 3px solid #ffffff;
}
.main-page-content {
margin-bottom: 0.5rem;
padding: 0;
}
.title1 {
font-family: tahoma;
font-size: 20px;
text-align: center;
margin-bottom: 2rem;
}
p {
margin: 1rem 0 2rem;
}
.callout {
background: rgba(238, 238, 238, 0.395);
border-radius: var(--elem-radius);
box-shadow: rgb(95, 95, 95);
display: flex;
flex-direction: column;
gap: 1rem;
margin: 2rem 0;
padding: 2rem;
text-align: left;
}
.boxed {
border: 1px solid rgb(78, 78, 78) ;
padding: 1rem;
width: 37em;
margin-left: auto;
margin-right: auto;
}
.textinrect {
word-spacing: 100px;
}
.sidebar {
grid-area: sidebar;
padding-top: 3rem;
max-width: 200px;
}
.list {
list-style: none;
padding-left: 0.5em;
}
.sidebar-heading {
color: Black;
font-size: 18px;
font-family: tahoma;
letter-spacing: 1.5px;
margin-left: 7px;
}
.subject-header {
color: rgba(0, 0, 0, 0.749);
font-size: 14px;
font-family: tahoma;
letter-spacing: 1px;
}
.subject {
margin-bottom: 1em;
}
.toggle {
margin-bottom: 15px;
}
.sub-topic {
color: black;
}
.toggle1 {
padding-top: 1em;
}
.toggle0 {
list-style: none;
padding-left: 1.5em ;
}
a {
text-decoration: none;
}<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
<link rel="stylesheet" href="fortest.css">
</head>
<body>
<div class="page-wrapper">
<div class="main-wrapper">
<div class="middle-wrapper">
<article class="main-page-content">
<h2 class="title1">How to create an HTML website</h2>
<div class="section1">
<p>1. Nav Bar</p>
<div class="callout">
<div class="boxed">
<div class="textinrect">
Yourwebsitename home about page3
</div>
</div>
</div>
</div>
</article>
</div>
<aside class="sidebar">
<nav class="sidebar-inner">
<p class="sidebar-heading">Subjects</p>
<div>
<ol class="list">
<li class="subject">
<a href="#">
<h5 class="subject-header">Subject1</h5>
</a>
</li>
<li class="toggle">
<details>
<summary>
All the school sunjects
</summary>
<ol class="toggle0">
<li class="toggle1">
<a class="sub-topic" href="#">The molecular mass and power</a>
</li>
<li class="toggle1">
<a class="sub-topic" href="#">the molecular mass and power</a>
</li>
</ol>
</details>
</li>
<li class="toggle">
<details>
<summary>
Not all school subjects
</summary>
</details>
</li>
</ol>
</div>
</nav>
</aside>
</div>
</body>
</html>我的目标是使侧边栏停留在文档的最开始，在主文本的左侧。出于某种原因，它在主部分下面写着。我知道这是立场问题，但我找不到正确的立场。如能得到您的答复，我将不胜感激。
试试这个，
#sidebar {
float: left;
width: 208px;
padding-top: 30px;
background-color:#D2D2D2;
margin-left:initial;
/*position: fixed;*/ //remove it
}
#content {
float: left; // change right to left
width: 564px;
padding-top: 30px;
}