/* Decorative icon choreography is shared and never becomes authored HTML. */
@keyframes envelope-action-swap {
    0% { transform:translateX(0);opacity:1; }
    45% { transform:translateX(var(--blocks-action-distance,.3em));opacity:0; }
    46% { transform:translateX(calc(-1 * var(--blocks-action-distance,.3em)));opacity:0; }
    100% { transform:translateX(0);opacity:1; }
}