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What does the css display attribute mean? Detailed explanation of display attribute in css

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不言Original
2018-10-23 11:13:5613247browse

The display attribute of css is an attribute that we often need to use in web development. Today’s article will take you to have an in-depth understanding of what the display attribute is. Friends in need can take a look.

First let’s look at the definition of the css display attribute

The definition of the css display attribute can hide or display page elements, or force elements Change it to a block-level element or an inline element. The display attribute is often used in page layout and JavaScript special effects.

There are four most commonly used attribute values ​​​​in the css display attribute, namely block, inline-block, inline and none.

Let’s analyze these four display attribute values ​​in detail.

Before introducing these four attribute values, we need to first understand block-level elements and inline elements. You can refer to these two articles: http://www.php. cn/css-tutorial-409377.htmlandhttp://www.php.cn/css-tutorial-409376.htmlI won’t go into details here, let’s just look at the display An introduction to four commonly used attribute values.

1. The block attribute value of display (display:block)

Set the element to a block element. If the width and height are not specified, the parent will be inherited by default. The width of the element, and it occupies an exclusive line. Even if there is remaining width, it will occupy an exclusive line. The height is generally based on the height of the child elements. Of course, you can also set the width and height yourself.

Let’s take a look at an example:

<!DOCTYPE html>
<html>
<head>
    <title></title>
    <style type="text/css">
        a {
        background: lightblue;
        width: 300px;
                display: block;
    }
    </style>
</head>
<body>
<div>
    <a href="http//:www.php.cn">php中文网</a>
    <a href="http//:www.php.cn">php中文网</a>
    <a href="http//:www.php.cn">php中文网</a>
</div>
</body>
</html>

The effect of setting the block attribute value of display is as follows:

What does the css display attribute mean? Detailed explanation of display attribute in css

2. The inline attribute value of display (display:inline)

The content expands the width and will not occupy a single line. Width and height are not supported. Code line breaks will be parsed into spaces.

Example of inline attribute value:

<!DOCTYPE html>
<html>
<head>
    <title></title>
    <style type="text/css">
        div{
        background: lightblue;       
    }
    li{
        display: inline;
    }
    </style>
</head>
<body>
<div>
    <li><a href="http//:www.php.cn">php中文网</a></li>
    <li><a href="http//:www.php.cn">php中文网</a></li>
    <li><a href="http//:www.php.cn">php中文网</a></li>
</div>
</body>
</html>

The effect of setting the inline attribute value of display is as follows:

What does the css display attribute mean? Detailed explanation of display attribute in css

3. The inline-block attribute value of display (display:inline-block)

When the width is not set, the content expands the width; it will not occupy one line, supports width and height, and the code line breaks are parsed into a space. In short, the object is rendered inline, but the object's content is rendered as a block, giving it both the width and height characteristics of block and the peer characteristics of inline.

4. The none attribute value of display (display:none)

When the element is set to none, it will neither occupy space nor be displayed, which is equivalent to the The element does not exist; this property can be used to improve reflow and redrawing.

This article ends here. For an introduction to other attribute values ​​​​in the display attribute, you can refer to the css Learning Manual of the PHP Chinese website for further understanding.

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