.spinner.is-grow span {
    animation: spinner-grow 1.5s ease-in-out infinite;
}

.spinner.is-elastic {
    animation-timing-function: cubic-bezier(0.53, 0.21, 0.29, 0.67);
    animation-duration: 1.3;
}

.spinner.is-grow span:nth-child(1) {
    animation-delay: -750ms;
}

@keyframes spinner-grow {
    0%,
    100% {
        transform: scale(0);
    }
    50% {
        transform: scale(1.1);
    }
}