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Here you can Sed posuere consectetur est at lobortis. Donec ullamcorper nulla non metus auctor fringilla. Maecenas sed diam eget risus varius blandit sit amet non magna. Donec id elit non mi porta gravida at eget metus. Praesent commodo cursus magna, vel scelerisque nisl consectetur et.

HTML

              
                
<!-- idea:
Create an SVG that has a raster image and a mask. mask the raster, so that you have a semi-transparent SVG. Include the SVG instead of the "transparent png" in your content.
-->
<svg width="300" height="300" xmlns="http://www.w3.org/2000/svg">
<defs>  
  
  <!-- Simple square -->
 <mask id="Mask1">
    <rect fill="transparent" height="100" width="100" y="50" x="50"/>
 </mask>
  <!-- An transparent PNG that is mostly black (so no image shows), but with some transparency -->
  <mask id="Mask2">
      <image xlink:href="https://estelle.github.io/doyouknowcss/images/framemask.png"/>
  </mask>
  <!-- A RAT -->
  <mask id="Mask3">
    <path  d="m1.516968,95.256875c0,0 -4.384016,-8.140001 1.75357,-11.679118c6.137586,-3.539007 26.303824,-35.568019 42.086045,-36.098903c0,0 0.876785,-31.851941 12.275081,-26.543321c11.398387,5.30873 6.137586,9.555582 6.137586,9.555582c0,0 19.289453,-27.604979 24.550254,3.185194c0,0 5.26071,7.96304 25.426948,-14.864202c20.166238,-22.827243 89.383297,-28.252739 122.751087,13.802544c21.48137,27.074205 51.292334,67.42007 28.057303,104.049857c0,0 13.450164,80.462153 -98.934839,68.379132c0,0 -43.544047,-9.98387 -65.902202,-8.922102c-22.358246,1.061658 -40.770913,10.086466 -29.810964,-2.123536c10.959858,-12.209892 40.332475,-12.209892 79.788165,-3.185194c39.45569,9.024808 102.584758,7.432156 102.584758,-46.716253c0,0 -9.644726,4.246962 -14.028651,1.061768c0,0 2.191917,11.679008 -10.521511,10.61735c-12.713519,-1.061768 -24.550254,-5.839504 -37.70212,1.061658c0,0 -3.945578,3.185304 -5.260801,0c0,0 -6.575933,0 -4.383925,-3.185194c0,0 -3.726359,-1.858039 0,-5.30862c3.726359,-3.450581 29.810964,-2.919807 28.934179,-3.185194c-0.876785,-0.265387 0.438347,-3.450581 -1.75357,-3.185194c-2.192008,0.265387 -67.074737,5.043233 -84.172182,-1.061768c0,0 -0.876785,7.166769 -4.383925,4.246962c0,0 -32.44141,3.981465 -39.45569,8.493814c-7.014371,4.512459 -4.603235,1.061768 -7.014371,2.123536c-2.411227,1.061658 -5.041582,6.104891 -7.891156,3.185194c0,0 -9.644726,2.919697 -7.014371,-2.123536c0,0 -3.068702,1.327265 -4.383925,-2.123426c0,0 -4.164797,-1.592542 1.75357,-7.432156c5.918367,-5.839504 29.810964,-5.574007 31.564534,-8.493814c1.753661,-2.919807 1.096004,-5.043233 -4.383925,-4.246962c-5.479929,0.796271 -16.659098,-1.592542 -25.427039,-8.493814c-8.767941,-6.901272 -5.930561,-10.33296 -24.550163,-12.740886c-15.051582,-1.946465 -18.120376,-4.600775 -21.919808,-6.370388c-3.799523,-1.769503 -8.767941,-11.679008 -8.767941,-11.679008z"  fill="#fff"/>
  </mask>
  <!-- A Frame: only the white part will show. The black part will be transparent-->
  <mask id="Mask4">
    <rect stroke="#000"  height="300" width="200" y="0" x="0" fill="#ffffff"/>
    <rect stroke="#000"  height="220" width="120" y="40" x="40" fill="#000000"/>
 </mask>
</defs>
  <!-- THIS IS THE IMAGE THAT WILL BE MASKED -->
 <image id="image" xlink:href="https://placekitten.com.s3.amazonaws.com/homepage-samples/200/287.jpg" height="300" width="200" x="0" y="0" mask="url(#Mask3)"/>
</svg>
              
            
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CSS

              
                svg { /* se what part of image is transparent -- will appear grey */
  background-color: #ddd;
}
              
            
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JS

              
                
              
            
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999px

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