@supports IE TestDrive Code Samples

block-filter.css

b {
  background-color: red;
}

@media only screen {
  b {
    background-color: green;
  }
  b[class] {
    background: linear-gradient( 0deg, rgb(65, 150, 44), rgb(26, 219, 73) );
  }
}

rgba.css

b {
  background-color: red;
  background-color: rgba(34, 132, 39, 1);
}

selector-filter.css

b {
  background-color: red;
}

b[class] {
  background-color: green;
}

supports-filter.css

b {
  background-color: red;
}

@supports ( background: linear-gradient(0deg,red,red) ) {
  b {
    background: linear-gradient( 0deg, rgb(65, 150, 44), rgb(26, 219, 73) );
  }
}