Html 如何使用CSS为文本或图像提供透明背景？_Html_Css_Opacity

Html 如何使用CSS为文本或图像提供透明背景？

html css

Html 如何使用CSS为文本或图像提供透明背景？,html,css,opacity,Html,Css,Opacity,是否可以仅使用CSS使元素的背景半透明，但使元素的内容（文本和图像）不透明 <head> <meta http-equiv="X-UA-Compatible" content="IE=edge" > <title>An XHTML 1.0 Strict standard template</title> <meta http-equiv="content-type" content="text/html;char

是否可以仅使用CSS使元素的背景半透明，但使元素的内容（文本和图像）不透明

 <head>
     <meta http-equiv="X-UA-Compatible" content="IE=edge" >
    <title>An XHTML 1.0 Strict standard template</title>
     <meta http-equiv="content-type" content="text/html;charset=utf-8" />
    <style type="text/css" media="all">
         .transparent-background-with-text-and-images-on-top {
             background: rgb(0, 0, 0) transparent;   /* Fallback for web browsers that doesn't support RGBa */
            background: rgba(0, 0, 0, 0.6);   /* RGBa with 0.6 opacity */
             filter:progid:DXImageTransform.Microsoft.gradient(startColorstr=#99000000, endColorstr=#99000000);  /* For IE 5.5 - 7*/
            -ms-filter: "progid:DXImageTransform.Microsoft.gradient(startColorstr=#99000000, endColorstr=#99000000)";  /* For IE 8*/
         }
     </style>
 </head>

 <body>
     <div class="transparent-background-with-text-and-images-on-top">
         <p>Here some content (text AND images) "on top of the transparent background"</p>
        <img src="http://i.imgur.com/LnnghmF.gif">
     </div>
 </body>
 </html>

我希望在不将文本和背景作为两个独立元素的情况下完成此任务

 <head>
     <meta http-equiv="X-UA-Compatible" content="IE=edge" >
    <title>An XHTML 1.0 Strict standard template</title>
     <meta http-equiv="content-type" content="text/html;charset=utf-8" />
    <style type="text/css" media="all">
         .transparent-background-with-text-and-images-on-top {
             background: rgb(0, 0, 0) transparent;   /* Fallback for web browsers that doesn't support RGBa */
            background: rgba(0, 0, 0, 0.6);   /* RGBa with 0.6 opacity */
             filter:progid:DXImageTransform.Microsoft.gradient(startColorstr=#99000000, endColorstr=#99000000);  /* For IE 5.5 - 7*/
            -ms-filter: "progid:DXImageTransform.Microsoft.gradient(startColorstr=#99000000, endColorstr=#99000000)";  /* For IE 8*/
         }
     </style>
 </head>

 <body>
     <div class="transparent-background-with-text-and-images-on-top">
         <p>Here some content (text AND images) "on top of the transparent background"</p>
        <img src="http://i.imgur.com/LnnghmF.gif">
     </div>
 </body>
 </html>

尝试时：

 <head>
     <meta http-equiv="X-UA-Compatible" content="IE=edge" >
    <title>An XHTML 1.0 Strict standard template</title>
     <meta http-equiv="content-type" content="text/html;charset=utf-8" />
    <style type="text/css" media="all">
         .transparent-background-with-text-and-images-on-top {
             background: rgb(0, 0, 0) transparent;   /* Fallback for web browsers that doesn't support RGBa */
            background: rgba(0, 0, 0, 0.6);   /* RGBa with 0.6 opacity */
             filter:progid:DXImageTransform.Microsoft.gradient(startColorstr=#99000000, endColorstr=#99000000);  /* For IE 5.5 - 7*/
            -ms-filter: "progid:DXImageTransform.Microsoft.gradient(startColorstr=#99000000, endColorstr=#99000000)";  /* For IE 8*/
         }
     </style>
 </head>

 <body>
     <div class="transparent-background-with-text-and-images-on-top">
         <p>Here some content (text AND images) "on top of the transparent background"</p>
        <img src="http://i.imgur.com/LnnghmF.gif">
     </div>
 </body>
 </html>

p{
位置：绝对位置；
背景颜色：绿色；
过滤器：α（不透明度=60）；
不透明度：0.6；
}
跨度{
颜色：白色；
过滤器：α（不透明度=100）；
不透明度：1；
}


你好，世界

最简单的方法是使用半透明背景PNG图像

<head> <meta http-equiv="X-UA-Compatible" content="IE=edge" > <title>An XHTML 1.0 Strict standard template</title> <meta http-equiv="content-type" content="text/html;charset=utf-8" /> <style type="text/css" media="all"> .transparent-background-with-text-and-images-on-top { background: rgb(0, 0, 0) transparent; /* Fallback for web browsers that doesn't support RGBa */ background: rgba(0, 0, 0, 0.6); /* RGBa with 0.6 opacity */ filter:progid:DXImageTransform.Microsoft.gradient(startColorstr=#99000000, endColorstr=#99000000); /* For IE 5.5 - 7*/ -ms-filter: "progid:DXImageTransform.Microsoft.gradient(startColorstr=#99000000, endColorstr=#99000000)"; /* For IE 8*/ } </style> </head> <body> <div class="transparent-background-with-text-and-images-on-top"> <p>Here some content (text AND images) "on top of the transparent background"</p> <img src="http://i.imgur.com/LnnghmF.gif"> </div> </body> </html>
如果需要，可以使用JavaScript使其在中工作

<head> <meta http-equiv="X-UA-Compatible" content="IE=edge" > <title>An XHTML 1.0 Strict standard template</title> <meta http-equiv="content-type" content="text/html;charset=utf-8" /> <style type="text/css" media="all"> .transparent-background-with-text-and-images-on-top { background: rgb(0, 0, 0) transparent; /* Fallback for web browsers that doesn't support RGBa */ background: rgba(0, 0, 0, 0.6); /* RGBa with 0.6 opacity */ filter:progid:DXImageTransform.Microsoft.gradient(startColorstr=#99000000, endColorstr=#99000000); /* For IE 5.5 - 7*/ -ms-filter: "progid:DXImageTransform.Microsoft.gradient(startColorstr=#99000000, endColorstr=#99000000)"; /* For IE 8*/ } </style> </head> <body> <div class="transparent-background-with-text-and-images-on-top"> <p>Here some content (text AND images) "on top of the transparent background"</p> <img src="http://i.imgur.com/LnnghmF.gif"> </div> </body> </html>
我使用中概述的方法

<head> <meta http-equiv="X-UA-Compatible" content="IE=edge" > <title>An XHTML 1.0 Strict standard template</title> <meta http-equiv="content-type" content="text/html;charset=utf-8" /> <style type="text/css" media="all"> .transparent-background-with-text-and-images-on-top { background: rgb(0, 0, 0) transparent; /* Fallback for web browsers that doesn't support RGBa */ background: rgba(0, 0, 0, 0.6); /* RGBa with 0.6 opacity */ filter:progid:DXImageTransform.Microsoft.gradient(startColorstr=#99000000, endColorstr=#99000000); /* For IE 5.5 - 7*/ -ms-filter: "progid:DXImageTransform.Microsoft.gradient(startColorstr=#99000000, endColorstr=#99000000)"; /* For IE 8*/ } </style> </head> <body> <div class="transparent-background-with-text-and-images-on-top"> <p>Here some content (text AND images) "on top of the transparent background"</p> <img src="http://i.imgur.com/LnnghmF.gif"> </div> </body> </html>

除此之外，您可以使用两个并排的兄弟元素来伪造它-使一个半透明，然后将另一个绝对定位在顶部。
最简单的方法是使用半透明背景PNG图像

<head> <meta http-equiv="X-UA-Compatible" content="IE=edge" > <title>An XHTML 1.0 Strict standard template</title> <meta http-equiv="content-type" content="text/html;charset=utf-8" /> <style type="text/css" media="all"> .transparent-background-with-text-and-images-on-top { background: rgb(0, 0, 0) transparent; /* Fallback for web browsers that doesn't support RGBa */ background: rgba(0, 0, 0, 0.6); /* RGBa with 0.6 opacity */ filter:progid:DXImageTransform.Microsoft.gradient(startColorstr=#99000000, endColorstr=#99000000); /* For IE 5.5 - 7*/ -ms-filter: "progid:DXImageTransform.Microsoft.gradient(startColorstr=#99000000, endColorstr=#99000000)"; /* For IE 8*/ } </style> </head> <body> <div class="transparent-background-with-text-and-images-on-top"> <p>Here some content (text AND images) "on top of the transparent background"</p> <img src="http://i.imgur.com/LnnghmF.gif"> </div> </body> </html>
如果需要，可以使用JavaScript使其在中工作

<head> <meta http-equiv="X-UA-Compatible" content="IE=edge" > <title>An XHTML 1.0 Strict standard template</title> <meta http-equiv="content-type" content="text/html;charset=utf-8" /> <style type="text/css" media="all"> .transparent-background-with-text-and-images-on-top { background: rgb(0, 0, 0) transparent; /* Fallback for web browsers that doesn't support RGBa */ background: rgba(0, 0, 0, 0.6); /* RGBa with 0.6 opacity */ filter:progid:DXImageTransform.Microsoft.gradient(startColorstr=#99000000, endColorstr=#99000000); /* For IE 5.5 - 7*/ -ms-filter: "progid:DXImageTransform.Microsoft.gradient(startColorstr=#99000000, endColorstr=#99000000)"; /* For IE 8*/ } </style> </head> <body> <div class="transparent-background-with-text-and-images-on-top"> <p>Here some content (text AND images) "on top of the transparent background"</p> <img src="http://i.imgur.com/LnnghmF.gif"> </div> </body> </html>
我使用中概述的方法

<head> <meta http-equiv="X-UA-Compatible" content="IE=edge" > <title>An XHTML 1.0 Strict standard template</title> <meta http-equiv="content-type" content="text/html;charset=utf-8" /> <style type="text/css" media="all"> .transparent-background-with-text-and-images-on-top { background: rgb(0, 0, 0) transparent; /* Fallback for web browsers that doesn't support RGBa */ background: rgba(0, 0, 0, 0.6); /* RGBa with 0.6 opacity */ filter:progid:DXImageTransform.Microsoft.gradient(startColorstr=#99000000, endColorstr=#99000000); /* For IE 5.5 - 7*/ -ms-filter: "progid:DXImageTransform.Microsoft.gradient(startColorstr=#99000000, endColorstr=#99000000)"; /* For IE 8*/ } </style> </head> <body> <div class="transparent-background-with-text-and-images-on-top"> <p>Here some content (text AND images) "on top of the transparent background"</p> <img src="http://i.imgur.com/LnnghmF.gif"> </div> </body> </html>

除此之外，您可以使用两个并排的兄弟元素来伪造它—使一个半透明，然后将另一个完全置于顶部。
有一些想法。可以使用半透明图像，也可以覆盖其他元素。
有一些想法。可以使用半透明图像，也可以覆盖其他元素。
问题是，在您的示例中，文本实际上是完全不透明的。它在
p
标记内完全不透明，但
p
标记只是半透明的

<head> <meta http-equiv="X-UA-Compatible" content="IE=edge" > <title>An XHTML 1.0 Strict standard template</title> <meta http-equiv="content-type" content="text/html;charset=utf-8" /> <style type="text/css" media="all"> .transparent-background-with-text-and-images-on-top { background: rgb(0, 0, 0) transparent; /* Fallback for web browsers that doesn't support RGBa */ background: rgba(0, 0, 0, 0.6); /* RGBa with 0.6 opacity */ filter:progid:DXImageTransform.Microsoft.gradient(startColorstr=#99000000, endColorstr=#99000000); /* For IE 5.5 - 7*/ -ms-filter: "progid:DXImageTransform.Microsoft.gradient(startColorstr=#99000000, endColorstr=#99000000)"; /* For IE 8*/ } </style> </head> <body> <div class="transparent-background-with-text-and-images-on-top"> <p>Here some content (text AND images) "on top of the transparent background"</p> <img src="http://i.imgur.com/LnnghmF.gif"> </div> </body> </html>
您可以添加半透明的PNG背景图像，而不是在CSS中实现它，或者将文本和div分成两个元素，并将文本移动到框上（例如，负边距）

<head> <meta http-equiv="X-UA-Compatible" content="IE=edge" > <title>An XHTML 1.0 Strict standard template</title> <meta http-equiv="content-type" content="text/html;charset=utf-8" /> <style type="text/css" media="all"> .transparent-background-with-text-and-images-on-top { background: rgb(0, 0, 0) transparent; /* Fallback for web browsers that doesn't support RGBa */ background: rgba(0, 0, 0, 0.6); /* RGBa with 0.6 opacity */ filter:progid:DXImageTransform.Microsoft.gradient(startColorstr=#99000000, endColorstr=#99000000); /* For IE 5.5 - 7*/ -ms-filter: "progid:DXImageTransform.Microsoft.gradient(startColorstr=#99000000, endColorstr=#99000000)"; /* For IE 8*/ } </style> </head> <body> <div class="transparent-background-with-text-and-images-on-top"> <p>Here some content (text AND images) "on top of the transparent background"</p> <img src="http://i.imgur.com/LnnghmF.gif"> </div> </body> </html>
否则就不可能了

<head> <meta http-equiv="X-UA-Compatible" content="IE=edge" > <title>An XHTML 1.0 Strict standard template</title> <meta http-equiv="content-type" content="text/html;charset=utf-8" /> <style type="text/css" media="all"> .transparent-background-with-text-and-images-on-top { background: rgb(0, 0, 0) transparent; /* Fallback for web browsers that doesn't support RGBa */ background: rgba(0, 0, 0, 0.6); /* RGBa with 0.6 opacity */ filter:progid:DXImageTransform.Microsoft.gradient(startColorstr=#99000000, endColorstr=#99000000); /* For IE 5.5 - 7*/ -ms-filter: "progid:DXImageTransform.Microsoft.gradient(startColorstr=#99000000, endColorstr=#99000000)"; /* For IE 8*/ } </style> </head> <body> <div class="transparent-background-with-text-and-images-on-top"> <p>Here some content (text AND images) "on top of the transparent background"</p> <img src="http://i.imgur.com/LnnghmF.gif"> </div> </body> </html>

就像Chris提到的那样：如果你使用一个透明的PNG文件，你必须使用JavaScript解决方案使它在讨厌的Internet Explorer中工作…
问题是，在你的示例中，文本实际上是完全不透明的。它在
p
标记内完全不透明，但
p
标记只是半透明的

<head> <meta http-equiv="X-UA-Compatible" content="IE=edge" > <title>An XHTML 1.0 Strict standard template</title> <meta http-equiv="content-type" content="text/html;charset=utf-8" /> <style type="text/css" media="all"> .transparent-background-with-text-and-images-on-top { background: rgb(0, 0, 0) transparent; /* Fallback for web browsers that doesn't support RGBa */ background: rgba(0, 0, 0, 0.6); /* RGBa with 0.6 opacity */ filter:progid:DXImageTransform.Microsoft.gradient(startColorstr=#99000000, endColorstr=#99000000); /* For IE 5.5 - 7*/ -ms-filter: "progid:DXImageTransform.Microsoft.gradient(startColorstr=#99000000, endColorstr=#99000000)"; /* For IE 8*/ } </style> </head> <body> <div class="transparent-background-with-text-and-images-on-top"> <p>Here some content (text AND images) "on top of the transparent background"</p> <img src="http://i.imgur.com/LnnghmF.gif"> </div> </body> </html>
您可以添加半透明的PNG背景图像，而不是在CSS中实现它，或者将文本和div分成两个元素，并将文本移动到框上（例如，负边距）

<head> <meta http-equiv="X-UA-Compatible" content="IE=edge" > <title>An XHTML 1.0 Strict standard template</title> <meta http-equiv="content-type" content="text/html;charset=utf-8" /> <style type="text/css" media="all"> .transparent-background-with-text-and-images-on-top { background: rgb(0, 0, 0) transparent; /* Fallback for web browsers that doesn't support RGBa */ background: rgba(0, 0, 0, 0.6); /* RGBa with 0.6 opacity */ filter:progid:DXImageTransform.Microsoft.gradient(startColorstr=#99000000, endColorstr=#99000000); /* For IE 5.5 - 7*/ -ms-filter: "progid:DXImageTransform.Microsoft.gradient(startColorstr=#99000000, endColorstr=#99000000)"; /* For IE 8*/ } </style> </head> <body> <div class="transparent-background-with-text-and-images-on-top"> <p>Here some content (text AND images) "on top of the transparent background"</p> <img src="http://i.imgur.com/LnnghmF.gif"> </div> </body> </html>
否则就不可能了

<head> <meta http-equiv="X-UA-Compatible" content="IE=edge" > <title>An XHTML 1.0 Strict standard template</title> <meta http-equiv="content-type" content="text/html;charset=utf-8" /> <style type="text/css" media="all"> .transparent-background-with-text-and-images-on-top { background: rgb(0, 0, 0) transparent; /* Fallback for web browsers that doesn't support RGBa */ background: rgba(0, 0, 0, 0.6); /* RGBa with 0.6 opacity */ filter:progid:DXImageTransform.Microsoft.gradient(startColorstr=#99000000, endColorstr=#99000000); /* For IE 5.5 - 7*/ -ms-filter: "progid:DXImageTransform.Microsoft.gradient(startColorstr=#99000000, endColorstr=#99000000)"; /* For IE 8*/ } </style> </head> <body> <div class="transparent-background-with-text-and-images-on-top"> <p>Here some content (text AND images) "on top of the transparent background"</p> <img src="http://i.imgur.com/LnnghmF.gif"> </div> </body> </html>

就像Chris提到的：如果你使用一个透明的PNG文件，你必须使用JavaScript解决方案使它在讨厌的Internet Explorer中工作…
不久前，我在一篇文章中写到了这一点

<head> <meta http-equiv="X-UA-Compatible" content="IE=edge" > <title>An XHTML 1.0 Strict standard template</title> <meta http-equiv="content-type" content="text/html;charset=utf-8" /> <style type="text/css" media="all"> .transparent-background-with-text-and-images-on-top { background: rgb(0, 0, 0) transparent; /* Fallback for web browsers that doesn't support RGBa */ background: rgba(0, 0, 0, 0.6); /* RGBa with 0.6 opacity */ filter:progid:DXImageTransform.Microsoft.gradient(startColorstr=#99000000, endColorstr=#99000000); /* For IE 5.5 - 7*/ -ms-filter: "progid:DXImageTransform.Microsoft.gradient(startColorstr=#99000000, endColorstr=#99000000)"; /* For IE 8*/ } </style> </head> <body> <div class="transparent-background-with-text-and-images-on-top"> <p>Here some content (text AND images) "on top of the transparent background"</p> <img src="http://i.imgur.com/LnnghmF.gif"> </div> </body> </html>

奇怪的是，InternetExplorer6可以使背景透明，并使顶部的文本完全不透明。对于其他浏览器，我建议使用一个透明的PNG文件。
不久前，我在中写到了这一点

<head> <meta http-equiv="X-UA-Compatible" content="IE=edge" > <title>An XHTML 1.0 Strict standard template</title> <meta http-equiv="content-type" content="text/html;charset=utf-8" /> <style type="text/css" media="all"> .transparent-background-with-text-and-images-on-top { background: rgb(0, 0, 0) transparent; /* Fallback for web browsers that doesn't support RGBa */ background: rgba(0, 0, 0, 0.6); /* RGBa with 0.6 opacity */ filter:progid:DXImageTransform.Microsoft.gradient(startColorstr=#99000000, endColorstr=#99000000); /* For IE 5.5 - 7*/ -ms-filter: "progid:DXImageTransform.Microsoft.gradient(startColorstr=#99000000, endColorstr=#99000000)"; /* For IE 8*/ } </style> </head> <body> <div class="transparent-background-with-text-and-images-on-top"> <p>Here some content (text AND images) "on top of the transparent background"</p> <img src="http://i.imgur.com/LnnghmF.gif"> </div> </body> </html>

奇怪的是，InternetExplorer6可以使背景透明，并使顶部的文本完全不透明。对于其他浏览器，我建议使用透明PNG文件。
使用半透明图像或CSS3：

<head> <meta http-equiv="X-UA-Compatible" content="IE=edge" > <title>An XHTML 1.0 Strict standard template</title> <meta http-equiv="content-type" content="text/html;charset=utf-8" /> <style type="text/css" media="all"> .transparent-background-with-text-and-images-on-top { background: rgb(0, 0, 0) transparent; /* Fallback for web browsers that doesn't support RGBa */ background: rgba(0, 0, 0, 0.6); /* RGBa with 0.6 opacity */ filter:progid:DXImageTransform.Microsoft.gradient(startColorstr=#99000000, endColorstr=#99000000); /* For IE 5.5 - 7*/ -ms-filter: "progid:DXImageTransform.Microsoft.gradient(startColorstr=#99000000, endColorstr=#99000000)"; /* For IE 8*/ } </style> </head> <body> <div class="transparent-background-with-text-and-images-on-top"> <p>Here some content (text AND images) "on top of the transparent background"</p> <img src="http://i.imgur.com/LnnghmF.gif"> </div> </body> </html>
背景色：rgba（255,0,0,0.5）；这里有一篇来自css3.info（2007-06-03）的文章

<head> <meta http-equiv="X-UA-Compatible" content="IE=edge" > <title>An XHTML 1.0 Strict standard template</title> <meta http-equiv="content-type" content="text/html;charset=utf-8" /> <style type="text/css" media="all"> .transparent-background-with-text-and-images-on-top { background: rgb(0, 0, 0) transparent; /* Fallback for web browsers that doesn't support RGBa */ background: rgba(0, 0, 0, 0.6); /* RGBa with 0.6 opacity */ filter:progid:DXImageTransform.Microsoft.gradient(startColorstr=#99000000, endColorstr=#99000000); /* For IE 5.5 - 7*/ -ms-filter: "progid:DXImageTransform.Microsoft.gradient(startColorstr=#99000000, endColorstr=#99000000)"; /* For IE 8*/ } </style> </head> <body> <div class="transparent-background-with-text-and-images-on-top"> <p>Here some content (text AND images) "on top of the transparent background"</p> <img src="http://i.imgur.com/LnnghmF.gif"> </div> </body> </html>

你好，世界！
使用半透明图像或CSS3：

<head> <meta http-equiv="X-UA-Compatible" content="IE=edge" > <title>An XHTML 1.0 Strict standard template</title> <meta http-equiv="content-type" content="text/html;charset=utf-8" /> <style type="text/css" media="all"> .transparent-background-with-text-and-images-on-top { background: rgb(0, 0, 0) transparent; /* Fallback for web browsers that doesn't support RGBa */ background: rgba(0, 0, 0, 0.6); /* RGBa with 0.6 opacity */ filter:progid:DXImageTransform.Microsoft.gradient(startColorstr=#99000000, endColorstr=#99000000); /* For IE 5.5 - 7*/ -ms-filter: "progid:DXImageTransform.Microsoft.gradient(startColorstr=#99000000, endColorstr=#99000000)"; /* For IE 8*/ } </style> </head> <body> <div class="transparent-background-with-text-and-images-on-top"> <p>Here some content (text AND images) "on top of the transparent background"</p> <img src="http://i.imgur.com/LnnghmF.gif"> </div> </body> </html>
背景色：rgba（255,0,0,0.5）；这里有一篇来自css3.info（2007-06-03）的文章

<head> <meta http-equiv="X-UA-Compatible" content="IE=edge" > <title>An XHTML 1.0 Strict standard template</title> <meta http-equiv="content-type" content="text/html;charset=utf-8" /> <style type="text/css" media="all"> .transparent-background-with-text-and-images-on-top { background: rgb(0, 0, 0) transparent; /* Fallback for web browsers that doesn't support RGBa */ background: rgba(0, 0, 0, 0.6); /* RGBa with 0.6 opacity */ filter:progid:DXImageTransform.Microsoft.gradient(startColorstr=#99000000, endColorstr=#99000000); /* For IE 5.5 - 7*/ -ms-filter: "progid:DXImageTransform.Microsoft.gradient(startColorstr=#99000000, endColorstr=#99000000)"; /* For IE 8*/ } </style> </head> <body> <div class="transparent-background-with-text-and-images-on-top"> <p>Here some content (text AND images) "on top of the transparent background"</p> <img src="http://i.imgur.com/LnnghmF.gif"> </div> </body> </html>

你好，世界！
最好使用半透明的
.png

<head> <meta http-equiv="X-UA-Compatible" content="IE=edge" > <title>An XHTML 1.0 Strict standard template</title> <meta http-equiv="content-type" content="text/html;charset=utf-8" /> <style type="text/css" media="all"> .transparent-background-with-text-and-images-on-top { background: rgb(0, 0, 0) transparent; /* Fallback for web browsers that doesn't support RGBa */ background: rgba(0, 0, 0, 0.6); /* RGBa with 0.6 opacity */ filter:progid:DXImageTransform.Microsoft.gradient(startColorstr=#99000000, endColorstr=#99000000); /* For IE 5.5 - 7*/ -ms-filter: "progid:DXImageTransform.Microsoft.gradient(startColorstr=#99000000, endColorstr=#99000000)"; /* For IE 8*/ } </style> </head> <body> <div class="transparent-background-with-text-and-images-on-top"> <p>Here some content (text AND images) "on top of the transparent background"</p> <img src="http://i.imgur.com/LnnghmF.gif"> </div> </body> </html>
只需打开，创建一个
2x2
像素图像（），用绿色填充，并将“层选项卡”中的不透明度设置为60%。然后将其保存并使其成为背景图像：

<p style="background: url(green.png);">any text</p>

<head> <meta http-equiv="X-UA-Compatible" content="IE=edge" > <title>An XHTML 1.0 Strict standard template</title> <meta http-equiv="content-type" content="text/html;charset=utf-8" /> <style type="text/css" media="all"> .transparent-background-with-text-and-images-on-top { background: rgb(0, 0, 0) transparent; /* Fallback for web browsers that doesn't support RGBa */ background: rgba(0, 0, 0, 0.6); /* RGBa with 0.6 opacity */ filter:progid:DXImageTransform.Microsoft.gradient(startColorstr=#99000000, endColorstr=#99000000); /* For IE 5.5 - 7*/ -ms-filter: "progid:DXImageTransform.Microsoft.gradient(startColorstr=#99000000, endColorstr=#99000000)"; /* For IE 8*/ } </style> </head> <body> <div class="transparent-background-with-text-and-images-on-top"> <p>Here some content (text AND images) "on top of the transparent background"</p> <img src="http://i.imgur.com/LnnghmF.gif"> </div> </body> </html>

最好使用半透明的
.png

<head> <meta http-equiv="X-UA-Compatible" content="IE=edge" > <title>An XHTML 1.0 Strict standard template</title> <meta http-equiv="content-type" content="text/html;charset=utf-8" /> <style type="text/css" media="all"> .transparent-background-with-text-and-images-on-top { background: rgb(0, 0, 0) transparent; /* Fallback for web browsers that doesn't support RGBa */ background: rgba(0, 0, 0, 0.6); /* RGBa with 0.6 opacity */ filter:progid:DXImageTransform.Microsoft.gradient(startColorstr=#99000000, endColorstr=#99000000); /* For IE 5.5 - 7*/ -ms-filter: "progid:DXImageTransform.Microsoft.gradient(startColorstr=#99000000, endColorstr=#99000000)"; /* For IE 8*/ } </style> </head> <body> <div class="transparent-background-with-text-and-images-on-top"> <p>Here some content (text AND images) "on top of the transparent background"</p> <img src="http://i.imgur.com/LnnghmF.gif"> </div> </body> </html>
只需打开，创建一个
2x2
像素图像（），用绿色填充，并将“层选项卡”中的不透明度设置为60%。然后将其保存并使其成为背景图像：

<p style="background: url(green.png);">any text</p>

<head> <meta http-equiv="X-UA-Compatible" content="IE=edge" > <title>An XHTML 1.0 Strict standard template</title> <meta http-equiv="content-type" content="text/html;charset=utf-8" /> <style type="text/css" media="all"> .transparent-background-with-text-and-images-on-top { background: rgb(0, 0, 0) transparent; /* Fallback for web browsers that doesn't support RGBa */ background: rgba(0, 0, 0, 0.6); /* RGBa with 0.6 opacity */ filter:progid:DXImageTransform.Microsoft.gradient(startColorstr=#99000000, endColorstr=#99000000); /* For IE 5.5 - 7*/ -ms-filter: "progid:DXImageTransform.Microsoft.gradient(startColorstr=#99000000, endColorstr=#99000000)"; /* For IE 8*/ } </style> </head> <body> <div class="transparent-background-with-text-and-images-on-top"> <p>Here some content (text AND images) "on top of the transparent background"</p> <img src="http://i.imgur.com/LnnghmF.gif"> </div> </body> </html>

在Firefox3和Safari3中，您可以像使用RGBA一样使用

<head> <meta http-equiv="X-UA-Compatible" content="IE=edge" > <title>An XHTML 1.0 Strict standard template</title> <meta http-equiv="content-type" content="text/html;charset=utf-8" /> <style type="text/css" media="all"> .transparent-background-with-text-and-images-on-top { background: rgb(0, 0, 0) transparent; /* Fallback for web browsers that doesn't support RGBa */ background: rgba(0, 0, 0, 0.6); /* RGBa with 0.6 opacity */ filter:progid:DXImageTransform.Microsoft.gradient(startColorstr=#99000000, endColorstr=#99000000); /* For IE 5.5 - 7*/ -ms-filter: "progid:DXImageTransform.Microsoft.gradient(startColorstr=#99000000, endColorstr=#99000000)"; /* For IE 8*/ } </style> </head> <body> <div class="transparent-background-with-text-and-images-on-top"> <p>Here some content (text AND images) "on top of the transparent background"</p> <img src="http://i.imgur.com/LnnghmF.gif"> </div> </body> </html>
一个鲜为人知的技巧是，您可以在InternetExplorer中使用它，也可以使用渐变过滤器

<head> <meta http-equiv="X-UA-Compatible" content="IE=edge" > <title>An XHTML 1.0 Strict standard template</title> <meta http-equiv="content-type" content="text/html;charset=utf-8" /> <style type="text/css" media="all"> .transparent-background-with-text-and-images-on-top { background: rgb(0, 0, 0) transparent; /* Fallback for web browsers that doesn't support RGBa */ background: rgba(0, 0, 0, 0.6); /* RGBa with 0.6 opacity */ filter:progid:DXImageTransform.Microsoft.gradient(startColorstr=#99000000, endColorstr=#99000000); /* For IE 5.5 - 7*/ -ms-filter: "progid:DXImageTransform.Microsoft.gradient(startColorstr=#99000000, endColorstr=#99000000)"; /* For IE 8*/ } </style> </head> <body> <div class="transparent-background-with-text-and-images-on-top"> <p>Here some content (text AND images) "on top of the transparent background"</p> <img src="http://i.imgur.com/LnnghmF.gif"> </div> </body> </html>
背景色：rgba（0,255,0,0.5）；过滤器：progid:DXImageTransform.Microsoft.Gradient（GradientType=0，StartColorStr=''7F00FF00'，EndColorStr='7F00FF00'）；第一个十六进制数定义颜色的alpha值

<head> <meta http-equiv="X-UA-Compatible" content="IE=edge" > <title>An XHTML 1.0 Strict standard template</title> <meta http-equiv="content-type" content="text/html;charset=utf-8" /> <style type="text/css" media="all"> .transparent-background-with-text-and-images-on-top { background: rgb(0, 0, 0) transparent; /* Fallback for web browsers that doesn't support RGBa */ background: rgba(0, 0, 0, 0.6); /* RGBa with 0.6 opacity */ filter:progid:DXImageTransform.Microsoft.gradient(startColorstr=#99000000, endColorstr=#99000000); /* For IE 5.5 - 7*/ -ms-filter: "progid:DXImageTransform.Microsoft.gradient(startColorstr=#99000000, endColorstr=#99000000)"; /* For IE 8*/ } </style> </head> <body> <div class="transparent-background-with-text-and-images-on-top"> <p>Here some content (text AND images) "on top of the transparent background"</p> <img src="http://i.imgur.com/LnnghmF.gif"> </div> </body> </html>
所有浏览器的完整解决方案：

<head> <meta http-equiv="X-UA-Compatible" content="IE=edge" > <title>An XHTML 1.0 Strict standard template</title> <meta http-equiv="content-type" content="text/html;charset=utf-8" /> <style type="text/css" media="all"> .transparent-background-with-text-and-images-on-top { background: rgb(0, 0, 0) transparent; /* Fallback for web browsers that doesn't support RGBa */ background: rgba(0, 0, 0, 0.6); /* RGBa with 0.6 opacity */ filter:progid:DXImageTransform.Microsoft.gradient(startColorstr=#99000000, endColorstr=#99000000); /* For IE 5.5 - 7*/ -ms-filter: "progid:DXImageTransform.Microsoft.gradient(startColorstr=#99000000, endColorstr=#99000000)"; /* For IE 8*/ } </style> </head> <body> <div class="transparent-background-with-text-and-images-on-top"> <p>Here some content (text AND images) "on top of the transparent background"</p> <img src="http://i.imgur.com/LnnghmF.gif"> </div> </body> </html>

.alpha60{ /*不支持RGBa的web浏览器的回退*/ 背景：rgb（0,0,0）透明； /*不透明度为0.6的RGBa*/ 背景：rgba（0,0,0,0.6）； /*对于IE 5.5-7*/ 过滤器：progid:DXImageTransform.Microsoft.gradient（startColorstr=#99000000，endColorstr=#99000000）； /*对于IE 8*/ -ms过滤器：“progid:DXImageTransform.Microsoft.gradient（startColorstr=#99000000，endColorstr=#99000000）”； }
这是我的

<head> <meta http-equiv="X-UA-Compatible" content="IE=edge" > <title>An XHTML 1.0 Strict standard template</title> <meta http-equiv="content-type" content="text/html;charset=utf-8" /> <style type="text/css" media="all"> .transparent-background-with-text-and-images-on-top { background: rgb(0, 0, 0) transparent; /* Fallback for web browsers that doesn't support RGBa */ background: rgba(0, 0, 0, 0.6); /* RGBa with 0.6 opacity */ filter:progid:DXImageTransform.Microsoft.gradient(startColorstr=#99000000, endColorstr=#99000000); /* For IE 5.5 - 7*/ -ms-filter: "progid:DXImageTransform.Microsoft.gradient(startColorstr=#99000000, endColorstr=#99000000)"; /* For IE 8*/ } </style> </head> <body> <div class="transparent-background-with-text-and-images-on-top"> <p>Here some content (text AND images) "on top of the transparent background"</p> <img src="http://i.imgur.com/LnnghmF.gif"> </div> </body> </html>
结果的屏幕截图证明：这是在使用以下代码时发生的：

<head> <meta http-equiv="X-UA-Compatible" content="IE=edge" > <title>An XHTML 1.0 Strict standard template</title> <meta http-equiv="content-type" content="text/html;charset=utf-8" /> <style type="text/css" media="all"> .transparent-background-with-text-and-images-on-top { background: rgb(0, 0, 0) transparent; /* Fallback for web browsers that doesn't support RGBa */ background: rgba(0, 0, 0, 0.6); /* RGBa with 0.6 opacity */ filter:progid:DXImageTransform.Microsoft.gradient(startColorstr=#99000000, endColorstr=#99000000); /* For IE 5.5 - 7*/ -ms-filter: "progid:DXImageTransform.Microsoft.gradient(startColorstr=#99000000, endColorstr=#99000000)"; /* For IE 8*/ } </style> </head> <body> <div class="transparent-background-with-text-and-images-on-top"> <p>Here some content (text AND images) "on top of the transparent background"</p> <img src="http://i.imgur.com/LnnghmF.gif"> </div> </body> </html>

XHTML1.0严格标准模板 .透明背景，顶部有文字和图像{ 背景：rgb（0，0，0）透明；/*不支持RGBa的web浏览器的回退*/ 背景：rgba（0,0,0,0.6）；/*不透明度为0.6的rgba*/ 过滤器：progid:DXImageTransform.Microsoft.gradient（startColorstr=#99000000，endColorstr=#99000000）；/*用于IE 5.5-7*/ -ms过滤器：“progid:DXImageTransform.Microsoft.gradient（startColorstr=#99000000，endColorstr=#99000000）”；/*用于IE 8*/ } 这里有一些内容（文本和图像）“在透明背景之上” <head> <meta http-equiv="X-UA-Compatible" content="IE=edge" > <title>An XHTML 1.0 Strict standard template</title> <meta http-equiv="content-type" content="text/html;charset=utf-8" /> <style type="text/css" media="all"> .transparent-background-with-text-and-images-on-top { background: rgb(0, 0, 0) transparent; /* Fallback for web browsers that doesn't support RGBa */ background: rgba(0, 0, 0, 0.6); /* RGBa with 0.6 opacity */ filter:progid:DXImageTransform.Microsoft.gradient(startColorstr=#99000000, endColorstr=#99000000); /* For IE 5.5 - 7*/ -ms-filter: "progid:DXImageTransform.Microsoft.gradient(startColorstr=#99000000, endColorstr=#99000000)"; /* For IE 8*/ } </style> </head> <body> <div class="transparent-background-with-text-and-images-on-top"> <p>Here some content (text AND images) "on top of the transparent background"</p> <img src="http://i.imgur.com/LnnghmF.gif"> </div> </body> </html>

在Firefox 3和Safari 3中，您可以使用RGB
<head> <meta http-equiv="X-UA-Compatible" content="IE=edge" > <title>An XHTML 1.0 Strict standard template</title> <meta http-equiv="content-type" content="text/html;charset=utf-8" /> <style type="text/css" media="all"> .transparent-background-with-text-and-images-on-top { background: rgb(0, 0, 0) transparent; /* Fallback for web browsers that doesn't support RGBa */ background: rgba(0, 0, 0, 0.6); /* RGBa with 0.6 opacity */ filter:progid:DXImageTransform.Microsoft.gradient(startColorstr=#99000000, endColorstr=#99000000); /* For IE 5.5 - 7*/ -ms-filter: "progid:DXImageTransform.Microsoft.gradient(startColorstr=#99000000, endColorstr=#99000000)"; /* For IE 8*/ } </style> </head> <body> <div class="transparent-background-with-text-and-images-on-top"> <p>Here some content (text AND images) "on top of the transparent background"</p> <img src="http://i.imgur.com/LnnghmF.gif"> </div> </body> </html>