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              <p>Issue: browsers treat overflow vs filters differently for SVG layout vs CSS box layout, and the results aren't consistent cross-browser.</p>

<h2>Nested SVGs</h2>
<p>Left-to-right:</p>
<ul>
  <li>no filter</li>
  <li>filter on the rectangle (inside an SVG with hidden overflow)</li>
  <li>filter on the svg element</li>
  <li>filter on a group/div containing the SVG with hidden overflow</li>
</ul>
<svg class="compound-svg" viewBox="0 0 400 100"
     style="overflow: visible;">
  <filter id="f">
    <feGaussianBlur stdDeviation="10"/>
    <feOffset dx="10"/>
  </filter>
  <style>
    rect {
      fill: orchid;
      stroke: tomato;
      stroke-width: 16px;
    }
    svg {
      overflow: hidden;
    }
  </style>
  
  <!-- no filter -->
    <svg x="10" y="10" width="80" height="80">
      <rect x="-10%" width="120%" height="100%" />
    </svg>
  
  <!-- filtered element inside
       an element with hidden overflow
    -->
  <svg x="110" y="10" width="80" height="80">
    <rect x="-10%" width="120%" height="100%"  
       filter="url(#f)" />
  </svg>
  
  <!-- filtered element that also 
       has hidden overflow
    -->
  <svg x="210" y="10" width="80" height="80" 
       filter="url(#f)" >
    <rect x="-10%" width="120%" height="100%" />
  </svg>
  
  <!-- filtered element containing
       an element with hidden overflow
    -->
  <g filter="url(#f)" >
    <svg x="310" y="10" width="80" height="80">
      <rect x="-10%" width="120%" height="100%" />
    </svg>
  </g>
</svg>

<h2>Inline SVGs</h2>
<div class="inline-svgs">
  
  <!-- no filter -->
    <svg viewBox="0 0 80 80">
      <rect x="-10%" width="120%" height="100%" />
    </svg>

  <!-- filtered element inside
       an element with hidden overflow
    -->
  <svg viewBox="0 0 80 80">
    <rect x="-10%" width="120%" height="100%"  
       filter="url(#f)" />
  </svg>
  
  <!-- filtered element that also 
       has hidden overflow
    -->
  <svg viewBox="0 0 80 80" 
       filter="url(#f)" >
    <rect x="-10%" width="120%" height="100%" />
  </svg>
  
  <!-- filtered element containing
       an element with hidden overflow
    -->
  <div style="display: inline-block; filter:url(#f)" >
    <svg viewBox="0 0 80 80">
      <rect x="-10%" width="120%" height="100%" />
    </svg>
  </div>
</div>
            
          
!
            
              .compound-svg {
  width: 400px;
}
.inline-svgs svg {
  width: 80px;
  margin: 10px;
}
body {
  margin: 0;
}
            
          
!
999px
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