nz-alert {
  display: block;
}

.@{alert-prefix-cls} {
  &-icon {
    line-height: 1;
  }

  &-marquee {
    display: flex;
    flex: 1;
    min-width: 0;
    overflow: hidden;

    &-track {
      display: flex;
      flex: 0 0 auto;
      align-items: center;
      min-width: 100%;
      white-space: nowrap;
      animation: alertMarquee 20s linear infinite;
    }

    &.ant-alert-marquee-pause-on-hover:hover &-track {
      animation-play-state: paused;
    }
  }
}

@keyframes alertMarquee {
  from {
    transform: translateX(0%);
  }

  to {
    transform: translateX(-100%);
  }
}