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What is the code for shadow style in html

青灯夜游Original: 2022-09-23 16:32:135111browse

Style code: 1. Text shadow style "text-shadow: h-shadow v-shadow blur color;"; 2. Border shadow style "box-shadow: h-shadow v-shadow blur spread color inset ;"; 3. Picture shadow style "filter:drop-shadow(h-shadow v-shadow blur spread color);".

The operating environment of this tutorial: Windows 7 system, CSS3&&HTML5 version, Dell G3 computer.

In HTML, there are three ways to add shadow styles to elements:

Text shadow: use the text-shadow attribute
Border shadow: use the box-shadow attribute
Picture shadow: use the filter attribute (needs to be used with the drop-shadow() function)

1. Text shadow style

In HTML, you can use the text-shadow attribute to implement shadowed text. The text-shadow attribute is applied to shadow text. .

Syntax

text-shadow: h-shadow v-shadow blur color;

Value	Description
h-shadow	Required. The position of the horizontal shadow. Negative values are allowed.
v-shadow	Required. The position of the vertical shadow. Negative values are allowed.
blur	Optional. Blurred distance.
color	Optional. The color of the shadow.

Note: The text-shadow property connects one or more shadow text. The property is a shadow, specifying every 2 or 3 length values and an optional color value separated by commas. The expired length is 0.

Example:

<!DOCTYPE html>
<html>
    <head>
        <meta charset="UTF-8">
        <title>设置文本阴影效果</title> 
        <style> 
            h1 { 
                color: red; 
                text-shadow: 3px 5px 5px #656B79; 
            }
        </style> 
    </head> 
    <body> 
        <h1>文本阴影！</h1>
    </body> 
</html>

Rendering:

What is the code for shadow style in html

2. Border shadow style

In html, you can use the box-shadow attribute to implement a border with a shadow style. The box-shadow property can set one or more drop-down shadow boxes.

Syntax

box-shadow: h-shadow v-shadow blur spread color inset;

Value	Description
h-shadow	Required. The position of the horizontal shadow. Negative values allowed
v-shadow	Required. The position of the vertical shadow. Negative values allowed
blur	Optional. Fuzzy distance
#spread	Optional. The size of the shadow
#color	is optional. The color of the shadow.
inset	Optional. Change shadow to inner shadow from outer shadow (at start)

注意：boxShadow 属性把一个或多个下拉阴影添加到框上。该属性是一个用逗号分隔阴影的列表，每个阴影由 2-4 个长度值、一个可选的颜色值和一个可选的 inset 关键字来规定。省略长度的值是 0。

示例：

<!DOCTYPE html>
<html>
	<head>
		<style>
			div {
				width: 300px;
				height: 100px;
				background-color:red;
				-moz-box-shadow: 10px 10px 5px #888888;
				/* 老的 Firefox */
				box-shadow: 10px 10px 5px #888888;
			}
		</style>
	</head>
	<body>

		<div>边框阴影</div>

	</body>
</html>

效果图：

What is the code for shadow style in html

3、图片阴影样式

在html中，可使用filter属性来实现带阴影样式的边框。

filter 属性定义了元素(通常是 What is the code for shadow style in html )的可视效果，当和drop-shadow()函数一起使用，可给图像设置一个阴影效果。

filter:drop-shadow(h-shadow v-shadow blur spread color);

阴影是合成在图像下面，可以有模糊度的，可以以特定颜色画出的遮罩图的偏移版本。函数接受(在CSS3背景中定义)类型的值，除了"inset"关键字是不允许的。该函数与已有的box-shadow box-shadow属性很相似；不同之处在于，通过滤镜，一些浏览器为了更好的性能会提供硬件加速。参数如下：

h-shadow v-shadow (必须)
这是设置阴影偏移量的两个值. 设定水平方向距离. 负值会使阴影出现在元素左边. 设定垂直距离.负值会使阴影出现在元素上方。查看可能的单位.
如果两个值都是0, 则阴影出现在元素正后面 (如果设置了 and/or ，会有模糊效果).
(可选)
这是第三个code>值. 值越大，越模糊，则阴影会变得更大更淡.不允许负值若未设定，默认是0 (则阴影的边界很锐利).
(可选)
这是第四个值. 正值会使阴影扩张和变大，负值会是阴影缩小.若未设定，默认是0 (阴影会与元素一样大小).
注意: Webkit, 以及一些其他浏览器不支持第四个长度，如果加了也不会渲染。
(可选)
查看该值可能的关键字和标记。若未设定，颜色值基于浏览器。在Gecko (Firefox), Presto (Opera)和Trident (Internet Explorer)中，会应用colorcolor属性的值。另外, 如果颜色值省略，WebKit中阴影是透明的。

<!DOCTYPE html>
<html>
<head>
<style>
img {
    -webkit-filter: drop-shadow(8px 8px 10px red); /* Chrome, Safari, Opera */
    filter: drop-shadow(8px 8px 10px red);
}
</style>
</head>
<body>

<p>给图像设置一个阴影效果:</p>

<img src="pineapple.jpg" alt="Pineapple" width="300"    style="max-width:90%">

</body>
</html>

What is the code for shadow style in html

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