.class {
  -webkit-mask: none;
  mask: none;
}
.class {
  -webkit-mask-image: none;
  mask-image: none;
}
.class {
  -webkit-mask-image: -webkit-linear-gradient(#fff);
  mask-image: -webkit-linear-gradient(#fff);
  mask-image: -moz-linear-gradient(#fff);
  mask-image: -o-linear-gradient(#fff);
  mask-image: linear-gradient(#fff);
}
.class {
  mask-mode: initial;
}
.class {
  -webkit-mask-clip: initial;
  mask-clip: initial;
}
.class {
  -webkit-mask-size: initial;
  mask-size: initial;
}
.class {
  -webkit-mask-repeat: initial;
  mask-repeat: initial;
}
.class {
  -webkit-mask-origin: initial;
  mask-origin: initial;
}
.class {
  -webkit-mask-position: initial;
  mask-position: initial;
}
.class {
  -webkit-mask-composite: initial;
  mask-composite: initial;
}
.class {
  -webkit-mask-border-source: url(image.png);
  mask-border-source: url(image.png);
  -webkit-mask-box-image-slice: 50% fill;
  mask-border-slice: 50% fill;
  -webkit-mask-box-image-width: auto 1 50%;
  mask-border-width: auto 1 50%;
  -webkit-mask-box-image-outset: 0 1 2;
  mask-border-outset: 0 1 2;
  -webkit-mask-border-repeat: repeat space;
  mask-border-repeat: repeat space;
  -webkit-mask-box-image: url(#foo) 1 fill;
  mask-border: url(#foo) 1 fill;
}
a {
  -webkit-mask: url(add.png) add, url(substract.png);
  mask: url(add.png) add, url(substract.png);
}
a {
  -webkit-mask: url(intersect.png) intersect, url(exclude.png);
  mask: url(intersect.png) intersect, url(exclude.png);
}
a {
  -webkit-mask: url(image.png) intersect, url(image.png) add, url(image.png);
  mask: url(image.png) intersect, url(image.png) add, url(image.png);
}
a {
  -webkit-mask-composite: add;
  mask-composite: add;
}
a {
  mask-composite: ;
}
a {
  -webkit-mask-composite: add, subtract, exclude;
  mask-composite: add, subtract, exclude;
}