[data-delivery-option-group="1"] {
    border-radius: 4px;
    transition: box-shadow .2s ease;
}

.delivery-callout-highlight {
    animation: emz-delivery-pulse 2.5s ease-in-out;
    box-shadow: 0 0 0 3px rgba(204, 0, 0, .6);
}

@keyframes emz-delivery-pulse {
    0%   { box-shadow: 0 0 0 0   rgba(204, 0, 0, .9); }
    50%  { box-shadow: 0 0 0 10px rgba(204, 0, 0, .2); }
    100% { box-shadow: 0 0 0 3px rgba(204, 0, 0, .6); }
}