.spin {
    animation: spin 1.5s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/** https://thinkdobecreate.com/articles/css-animating-newly-added-element/ **/

.anim-show {
    animation: show 600ms 100ms cubic-bezier(0.38, 0.97, 0.56, 0.76) forwards;
}

@keyframes show {
    100% {
        opacity: 1;
        transform: none;
    }
}
