```css

.stacked-linear {
  background: linear-gradient(
      217deg,
      rgb(255 0 0 / 80%),
      rgb(255 0 0 / 0%) 70.71%
    ), linear-gradient(127deg, rgb(0 255 0 / 80%), rgb(0 255 0 / 0%) 70.71%),
    linear-gradient(336deg, rgb(0 0 255 / 80%), rgb(0 0 255 / 0%) 70.71%);
}
```