lbry.tech/app/sass/partials/_flash.scss

.flashes {
  width: 100%;
  top: 4rem; right: 0;

  position: absolute;
  z-index: 9;
}

.flash {
  padding: 0.5rem 1rem;
  right: 2rem;

  border: 2px solid;
  border-radius: 3px;
  font-size: 1rem;
  line-height: 1.33;
  position: absolute;

  &:not(.error):not(.info):not(.warning) {
    background-color: mix($white, $teal, 90%);
    border-color: $teal;
  }

  &:not(.active) {
    transform: translateY(-4rem);
  }

  &.active {
    animation: slide-down 2s linear;
    transform: translateY(-4rem);
  }

  &.error {
    background-color: mix($white, $red, 90%);
    border-color: $red;
  }

  &.info {
    background-color: mix($white, $gray, 90%);
    border-color: $gray;
  }

  &.warning {
    background-color: mix($white, $yellow, 90%);
    border-color: $yellow;
  }
}