Implementation steps for implementing responsive navigation menu using pure CSS

Pure CSS is a quick way to create responsive navigation menus without using JavaScript. In this article, we’ll provide you with detailed steps to implement a responsive navigation menu, with concrete code examples.

Step 1: HTML structure
First, we need to set the HTML structure of the navigation menu. Here is a simple example:

<li class="menu-item">首页</li>
<li class="menu-item">关于我们</li>
<li class="menu-item">服务</li>
<li class="menu-item">联系我们</li>

Step 2: CSS Style
Next, we will style the navigation menu. Here are some basic styling settings:

.navbar {
background-color: #f2f2f2;
padding: 10px;
}

.menu {
list-style: none;
display: flex;
justify-content: center;
}

.menu-item {
margin: 0 10px;
}

In this example, we place the navigation menu in a navigation bar with a background color and use CSS Flexbox layout to align the menu items horizontally and center.

Step 3: Responsive Layout
In order to implement a responsive navigation menu, we need to use media queries. Media queries can change styles based on the width of the device to accommodate different screen sizes.

@media screen and (max-width: 768px) {
.menu {

flex-direction: column;
align-items: center;

}

.menu-item {

margin: 10px 0;

}
}

In the above code, we use media queries to change the layout of the navigation menu when the device width is less than or equal to 768px. We arrange the menu items vertically and center align them.

Step 4: Drop-down menu
Sometimes, the navigation menu may contain multiple submenu items. To provide a better user experience on small screens, we can add a drop-down menu feature.

First, we need to modify the HTML structure and add a drop-down menu tag for the submenu item:

<li class="menu-item">首页</li>
<li class="menu-item dropdown">
  关于我们
  <ul class="dropdown-menu">
    <li class="dropdown-menu-item">公司简介</li>
    <li class="dropdown-menu-item">团队</li>
    <li class="dropdown-menu-item">历史</li>
  </ul>
</li>
<li class="menu-item">服务</li>
<li class="menu-item">联系我们</li>

Next, we need to add styles to the drop-down menu:

.dropdown {
position: relative;
}

.dropdown-menu {
display: none;
position: absolute;
top: 100%;
background-color : #f2f2f2;
padding: 10px;
}

.dropdown:hover .dropdown-menu {
display: block;
}

In this example , we use relative positioning to position the drop-down menu relative to the parent menu item. The dropdown menu is styled to be absolutely positioned, with a width of 100% and a backgroundColor of #f2f2f2. A drop-down menu will appear when the mouse is hovering over the parent menu item.

Summary:
Through the above steps, we successfully implemented a pure CSS responsive navigation menu. Using media queries and some basic CSS styling, we can easily create navigation menus that adapt to different screen sizes. This method is not only simple and easy to use, but also provides a good user experience. You can further adjust the style and layout to suit your needs.

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