exui/static/spinner.css

.spinner {
    display: inline-block;
    position: relative;
    width: 62px;
    height: 24px;
}

.spinner div {
    position: absolute;
    top: 6px;
    width: 13px;
    height: 13px;
    border-radius: 50%;
    background: var(--textcolor-head);
    animation-timing-function: cubic-bezier(0, 1, 1, 0);
}

.spinner div:nth-child(1) {
    left: 4px;
    animation: spinner1 0.6s infinite;
}

.spinner div:nth-child(2) {
    left: 4px;
    animation: spinner2 0.6s infinite;
}

.spinner div:nth-child(3) {
    left: 24px;
    animation: spinner2 0.6s infinite;
}

.spinner div:nth-child(4) {
    left: 44px;
    animation: spinner3 0.6s infinite;
}

@keyframes spinner1 {
    0% { transform: scale(0); }
    100% { transform: scale(1); }
}

@keyframes spinner3 {
    0% { transform: scale(1); }
    100% { transform: scale(0); }
}

@keyframes spinner2 {
    0% { transform: translate(0, 0); }
    100% { transform: translate(20px, 0); }
}