mask-css-transform-ref.html (350B)
1 <svg style="width: 500px; height: 500px; border: 1px solid green;"> 2 <defs> 3 <mask id="mask"> 4 <rect x="200px" y="250px" width="100px" height="150px" fill="#ffffff" /> 5 <rect x="50px" y="105px" width="110px" height="195px" fill="blue" /> 6 </mask> 7 </defs> 8 <rect mask="url(#mask)" width="500px" height="500px" fill="red" /> 9 </svg>