This article introduces how to turn the entire web page into black and white or black, and what methods can be achieved. If you are interested in this, you can refer to it. I hope it will be helpful to you.
CSS code for the whole site.
html { filter:progid:DXImageTransform.Microsoft.BasicImage(grayscale=1); }
How to use: This code can change the webpage to black and white. Add the code to the top of CSS to achieve plain decoration. It is recommended that webmasters across the country take action. Condolences for the compatriots who died in the earthquake.
If the website does not use CSS, you can insert it between the HTML code
and of the web page/template:<style> html{filter:progid:DXImageTransform.Microsoft.BasicImage(grayscale=1);} </style>
Some webmasters’ websites may use this The css cannot take effect because the website does not use the latest web standard protocol
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml">
Please replace the at the top of the webpage with the above code.
The color of FLASH animation on some websites cannot be controlled by CSS filters. You can insert it between
<param value="false" name="menu"/> <param value="opaque" name="wmode"/>
The simplest The code to turn the page into gray is to add
<style type="text/css"> html { FILTER: gray } </style>
between the heads. In the general discuz forum, modify the
/images/header/header.css file under your control css file.
CSS method
Use the software Firefox (install firebug) plug-in; ie7 or IE 8 must have developer tools (press F12 to appear)
Everyone knows that in the IE browser, you can use a piece of code body {filter: gray;} to use Microsoft's filter code to decolor the entire website into a black and white gray tone effect, but it is not compatible with other non-IE browsers such as Firefox.
CSS website gray tone (only supports IE)
Inline style:
elem.style.filter = 'progid:DXImageTransform.Microsoft.BasicImage(grayscale=1)' ;
css style sheet:
elem { filter: progid:DXImageTransform.Microsoft.BasicImage(grayscale=1);
/* Element must "hasLayout"! */
zoom: 1;}
Because Firefox does not support filters, so yesterday I used Firefox’s children’s shoes and found that many websites (Renren, 19th floor) were still in color.
This involves browser compatibility issues, css hacks, etc.
Yesterday, I just used IE or Firefox's firebug to uncheck the box in front of body {filter: gray;}, or put elem.style.filter = 'progid:DXImageTransform.Microsoft.BasicImage(grayscale=1)' ; Uncheck this sentence to see it in color
As for how to turn Flash into gray and how to make a black and white website compatible with various browsers, I will just post the code. As for why Having written it this way, I won’t go into details. Interested friends can search for answers online.
Greying of FLASH:
The color of FLASH animation on some websites cannot be controlled by CSS filters. It can be done in the
JavaScript
Use:
//Method 1 var el = document.getElementById( 'myEl' );grayscale( el ); // Method two grayscale( document.getElementsByTagName('div') ); // Used in jquery: grayscale( $('div') );
Reset:
grayscale.reset ( el ); // Similarly, the reset method can also be used jquerygrayscale.reset( $('div') );
Preprocessing:
grayscale.prepare( document.getElementById(' myEl') );// grayscale.prepare( $('.gall_img') );
can also be used in jqueryThe above is the detailed content of What are some ways to turn an entire web page into black and white?. For more information, please follow other related articles on the PHP Chinese website!

在css中,可用list-style-type属性来去掉ul的圆点标记,语法为“ul{list-style-type:none}”;list-style-type属性可设置列表项标记的类型,当值为“none”可不定义标记,也可去除已有标记。

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在css中,可以利用cursor属性实现鼠标隐藏效果,该属性用于定义鼠标指针放在一个元素边界范围内时所用的光标形状,当属性值设置为none时,就可以实现鼠标隐藏效果,语法为“元素{cursor:none}”。

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在css中,rtl是“right-to-left”的缩写,是从右往左的意思,指的是内联内容从右往左依次排布,是direction属性的一个属性值;该属性规定了文本的方向和书写方向,语法为“元素{direction:rtl}”。

在css中,可以利用“font-style”属性设置i元素不是斜体样式,该属性用于指定文本的字体样式,当属性值设置为“normal”时,会显示元素的标准字体样式,语法为“i元素{font-style:normal}”。

在css3中,可以用“transform-origin”属性设置rotate的旋转中心点,该属性可更改转换元素的位置,第一个参数设置x轴的旋转位置,第二个参数设置y轴旋转位置,语法为“transform-origin:x轴位置 y轴位置”。


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