         0  0 -1 0 1
                                                               0  0  0 1 0"/>
    </filter>
  </defs>
</svg>

<style>
div {
  position: absolute;
}
.box {
  width: 200px;
  height: 200px;
  top: 100px;
  left: 100px;
  background: green;
}
.navbar {
  width: 300px;
  height: 50px;
  top: 150px;
  left: 50px;
  border: 2px solid blue;
  backdrop-filter: url(#svgInvert);
  border-radius: 10px 20px 30px 40px;
}
.menu {
  width: 100px;
  height: 150px;
  top: 50px;
  left: 95px;
  border: 2