在网站的中添加一段代码即可。如图： 代码如下： </span></div> </td> </tr> <tr> <td style="border-bottom: #000000; border-left: #000000; padding-bottom: 0.75pt; background-color: transparent; padding-left: 0.75pt; padding-right: 0.75pt; border-top: #000000; border-right: #000000; padding-top: 0.75pt"> </td> <td style="border-bottom: #000000; border-left: #000000; padding-bottom: 0.75pt; background-color: transparent; padding-left: 0.75pt; padding-right: 0.75pt; border-top: #000000; border-right: #000000; padding-top: 0.75pt"> <div align="left"><span style="font-size: 12pt">html{ </span></div> </td> </tr> <tr> <td style="border-bottom: #000000; border-left: #000000; padding-bottom: 0.75pt; background-color: transparent; padding-left: 0.75pt; padding-right: 0.75pt; border-top: #000000; border-right: #000000; padding-top: 0.75pt"> </td> <td style="border-bottom: #000000; border-left: #000000; padding-bottom: 0.75pt; background-color: transparent; padding-left: 0.75pt; padding-right: 0.75pt; border-top: #000000; border-right: #000000; padding-top: 0.75pt"> <div align="left"><span style="font-size: 12pt">-webkit-filter: grayscale(100%); </span></div> </td> </tr> <tr> <td style="border-bottom: #000000; border-left: #000000; padding-bottom: 0.75pt; background-color: transparent; padding-left: 0.75pt; padding-right: 0.75pt; border-top: #000000; border-right: #000000; padding-top: 0.75pt"> </td> <td style="border-bottom: #000000; border-left: #000000; padding-bottom: 0.75pt; background-color: transparent; padding-left: 0.75pt; padding-right: 0.75pt; border-top: #000000; border-right: #000000; padding-top: 0.75pt"> <div align="left"><span style="font-size: 12pt">-moz-filter: grayscale(100%); </span></div> </td> </tr> <tr> <td style="border-bottom: #000000; border-left: #000000; padding-bottom: 0.75pt; background-color: transparent; padding-left: 0.75pt; padding-right: 0.75pt; border-top: #000000; border-right: #000000; padding-top: 0.75pt"> </td> <td style="border-bottom: #000000; border-left: #000000; padding-bottom: 0.75pt; background-color: transparent; padding-left: 0.75pt; padding-right: 0.75pt; border-top: #000000; border-right: #000000; padding-top: 0.75pt"> <div align="left"><span style="font-size: 12pt">-ms-filter: grayscale(100%); </span></div> </td> </tr> <tr> <td style="border-bottom: #000000; border-left: #000000; padding-bottom: 0.75pt; background-color: transparent; padding-left: 0.75pt; padding-right: 0.75pt; border-top: #000000; border-right: #000000; padding-top: 0.75pt"> </td> <td style="border-bottom: #000000; border-left: #000000; padding-bottom: 0.75pt; background-color: transparent; padding-left: 0.75pt; padding-right: 0.75pt; border-top: #000000; border-right: #000000; padding-top: 0.75pt"> <div align="left"><span style="font-size: 12pt">-o-filter: grayscale(100%); </span></div> </td> </tr> <tr> <td style="border-bottom: #000000; border-left: #000000; padding-bottom: 0.75pt; background-color: transparent; padding-left: 0.75pt; padding-right: 0.75pt; border-top: #000000; border-right: #000000; padding-top: 0.75pt"> </td> <td style="border-bottom: #000000; border-left: #000000; padding-bottom: 0.75pt; background-color: transparent; padding-left: 0.75pt; padding-right: 0.75pt; border-top: #000000; border-right: #000000; padding-top: 0.75pt"> <div align="left"><span style="font-size: 12pt">filter: grayscale(100%); </span></div> </td> </tr> <tr> <td style="border-bottom: #000000; border-left: #000000; padding-bottom: 0.75pt; background-color: transparent; padding-left: 0.75pt; padding-right: 0.75pt; border-top: #000000; border-right: #000000; padding-top: 0.75pt"> </td> <td style="border-bottom: #000000; border-left: #000000; padding-bottom: 0.75pt; background-color: transparent; padding-left: 0.75pt; padding-right: 0.75pt; border-top: #000000; border-right: #000000; padding-top: 0.75pt"> <div align="left"><span style="font-size: 12pt">filter: url("data:image/svg xml;utf8,<svg xmlns=''><filter id='grayscale'><feColorMatrix type='matrix' values='0.3333 0.3333 0.3333 0 0 0.3333 0.3333 0.3333 0 0 0.3333 0.3333 0.3333 0 0 0 0 0 1 0'/></filter></svg>#grayscale"); </span></div> </td> </tr> <tr> <td style="border-bottom: #000000; border-left: #000000; padding-bottom: 0.75pt; background-color: transparent; padding-left: 0.75pt; padding-right: 0.75pt; border-top: #000000; border-right: #000000; padding-top: 0.75pt"> </td> <td style="border-bottom: #000000; border-left: #000000; padding-bottom: 0.75pt; background-color: transparent; padding-left: 0.75pt; padding-right: 0.75pt; border-top: #000000; border-right: #000000; padding-top: 0.75pt"> <div align="left"><span style="font-size: 12pt">filter: progid:DXImageTransform.Microsoft.BasicImage(grayscale=1); </span></div> </td> </tr> <tr> <td style="border-bottom: #000000; border-left: #000000; padding-bottom: 0.75pt; background-color: transparent; padding-left: 0.75pt; padding-right: 0.75pt; border-top: #000000; border-right: #000000; padding-top: 0.75pt"> </td> <td style="border-bottom: #000000; border-left: #000000; padding-bottom: 0.75pt; background-color: transparent; padding-left: 0.75pt; padding-right: 0.75pt; border-top: #000000; border-right: #000000; padding-top: 0.75pt"> <div align="left"><span style="font-size: 12pt">} </span></div> </td> </tr> <tr> <td style="border-bottom: #000000; border-left: #000000; padding-bottom: 0.75pt; background-color: transparent; padding-left: 0.75pt; padding-right: 0.75pt; border-top: #000000; border-right: #000000; padding-top: 0.75pt"> </td> <td style="border-bottom: #000000; border-left: #000000; padding-bottom: 0.75pt; background-color: transparent; padding-left: 0.75pt; padding-right: 0.75pt; border-top: #000000; border-right: #000000; padding-top: 0.75pt"> <div align="left"><span style="font-size: 12pt">
