How to create a web sidebar layout using HTML and CSS

HTML and CSS are the two most commonly used technologies in modern web design. They can be used to create a variety of different types of web page layouts, including sidebar layouts. In this article, we will introduce in detail how to use HTML and CSS to create a simple web page sidebar layout, with specific code examples.

First, create a basic HTML document structure. In the

tag, add a tag to reference an external CSS style sheet file. Then, add the following code in the tag as the basic structure of the sidebar layout:

<div class="container">
  <div class="sidebar">
    <ul class="sidebar-menu">
      <li><a href="#">菜单项1</a></li>
      <li><a href="#">菜单项2</a></li>
      <li><a href="#">菜单项3</a></li>
      <li><a href="#">菜单项4</a></li>
    </ul>
  </div>
  <div class="content">
    <!-- 网页内容 -->
  </div>
</div>

In the above code, a container is used to wrap the sidebar ( sidebar) and content area (content). The sidebar uses an unordered list (ul) as a container for menu items.

Next, use CSS to define the style of the sidebar layout. Add the following code in the external CSS stylesheet file:

.container {
  display: flex;
}

.sidebar {
  width: 200px;
  background-color: #F2F2F2;
  padding: 20px;
}

.sidebar-menu {
  list-style-type: none;
  padding: 0;
  margin: 0;
}

.sidebar-menu li {
  margin-bottom: 10px;
}

.content {
  flex-grow: 1;
  padding: 20px;
}

In the above code, the sidebar layout is implemented by using flexbox layout. The .container class is set to display: flex;, making it a flexible box. The

.sidebar class defines the style of the sidebar, including width (200px), background color (#F2F2F2), and padding (20px). The

.sidebar-menu class defines the style of the menu items, including removing the default list style (list-style-type: none;), and setting 0 padding and margins.

.sidebar-menu li class defines the style of each menu item, including the bottom margin (10px). The

.content class defines the style of the content area, uses flex-grow: 1; to fill the remaining space, and sets the padding (20px) .

This completes a simple web page sidebar layout. You can modify the menu items in the <li> tag as needed, or add other HTML elements to the content area.

To summarize, you can easily create a web page sidebar layout using HTML and CSS. By using flexbox and some basic style definitions, a simple yet effective layout can be achieved. I hope this article helps you understand and use HTML and CSS to create sidebar layouts!

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