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      CSS怎么使网页全部变成灰色

      2016-10-13分享

      Desaturating a color image couldn’t be simpler with CSS3. We’ll apply the filter as a class, as you’d typically desire several images to be affected by the code at the same time:

      img.desaturate { filter: grayscale(100%); }

      Naturally, all current browsers implement CSS3 filters via vendor prefixes, so our first job is to insert that code, writing in CSS that does not yet exist in order to future-proof our work:

      img.desaturate { filter: grayscale(100%);
      -webkit-filter: grayscale(100%);
      -moz-filter: grayscale(100%);
      filter: grayscale(100%);
      }

      Applying the class to the image is easy:

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