How to use css to achieve the effect of not following the scroll bar

The position attribute in CSS can be used to set the positioning method of elements on the page. One of the values ​​​​is called fixed. The element specified by the fixed value will be fixed at a certain position on the page and will not move as the page scrolls. This achieves the effect of CSS not following the scroll bar.

So under what circumstances do you need to use CSS to not follow the scroll bar effect? A common scenario is to add some fixed elements to the page, such as navigation bars, advertising spaces, etc. These elements need to always remain in a certain position on the page and not move as the user scrolls the page. This effect can be easily achieved using fixed positioning, while avoiding the complex stacking relationships and processing details in traditional layout methods.

Let’s look at a simple implementation example:

nbsp;html>


    <title>CSS不随滚动条</title>
    <style>
        #nav {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 60px;
            background-color: #f00;
            color: #fff;
            line-height: 60px;
            font-size: 24px;
            text-align: center;
        }

        #content {
            margin-top: 80px;
            padding: 20px;
            font-size: 18px;
            line-height: 1.8;
            text-align: justify;
        }
    </style>


    <div>导航栏</div>
    <div>
        <h2 id="CSS不随滚动条">CSS不随滚动条</h2>
        <p>有时我们需要在页面中添加一些固定的元素，例如导航栏、广告位等。这些元素需要始终保持在页面的某个位置，不会因为用户滚动页面而移动。</p>
        <p>使用CSS的fixed定位属性可以实现这一效果，同时避免了传统布局方式中的复杂层叠关系和处理细节。</p>
        <p>在本例中，我们设置了一个fixed定位的导航栏，它会始终显示在页面的顶部，不会随着用户滚动而移动。同时，在内容区域中我们添加了一些文本内容，方便演示效果。</p>
        <p>使用CSS不随滚动条的效果可以为网站开发带来很多便利，例如固定导航栏可以提高页面的导航性能，让用户更加方便地浏览网站内容。</p>
    </div>

In the above example code, we set a div element with an id of nav and use fixed positioning to fix it on the page. The top, which does not move as the user scrolls. At the same time, we added some text content in the content area to facilitate the demonstration effect. In this way, we can simply achieve the effect of CSS not following the scroll bar.

In general, the CSS non-scroll bar effect is a commonly used method in website development, which can easily achieve the fixed and suspended effects of page elements. In actual development, we can choose different positioning methods according to specific needs and scenarios to optimize the display effect and user experience of the page.

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