How to hide and show divs in css-Front-end Q&A-php.cn

How to hide and show divs in css

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Release： 2023-04-13 09:50:21

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CSS is a language used to add style and layout to web pages. In it, the div element is a common HTML tag that is used to create a block-level element with a specific style and layout. Hide and show are a very important technology in CSS, which can be used to control the visibility of elements in web pages.

First, let’s take a look at how to hide a div element using CSS. To achieve this effect, we can use the display attribute and set it to none. This way we can completely remove elements from the page while retaining their markup.

For example, the following code can implement a hidden div element:

<!DOCTYPE html>
<html>
<head>
    <title>隐藏div元素</title>
    <style>
        .hidden {
            display: none;
        }
    </style>
</head>
<body>
    <div class="hidden">这是一个隐藏的div元素</div>
</body>
</html>

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In the above code, we added a class name "hidden" to the

element and added it The display attribute is set to none. In this way, this element will not be displayed on the page.

Next, let’s take a look at how to use CSS to display a hidden div element. To achieve this effect, we need to use the display attribute and set it to block, inline, inline-block or other visible values.

For example, the following code can implement a displayed div element:

<!DOCTYPE html>
<html>
<head>
    <title>显示div元素</title>
    <style>
        .show {
            display: block;
        }
    </style>
</head>
<body>
    <div class="show">这是一个显示的div元素</div>
</body>
</html>

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In the above code, we added a class name "show" to the

element and added it The display attribute is set to block. In this way, this element will be displayed on the page.

In fact, there are other techniques and usages for CSS hiding and showing. For example, we can use the opacity attribute to change transparency, or use the visibility attribute to control the visibility of an element. At the same time, we can also use CSS transformations and transition effects to achieve more complex hiding and display effects.

In short, CSS hiding and showing is one of the common technologies in front-end development. By mastering its use, we can more flexibly control the elements on the page and improve user experience and page effects.

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