テンプレート:Loading/style.css

.loading {
    position: absolute;
    top: 50%;
    left: 5%;
    transform: translateY(-50%);
    border: 3px solid #fafafa;
    border-top: 3px solid #3498db;
    border-radius: 50%;
    width: 24px;
    height: 24px;
    animation: spin 1s linear infinite;
}
@keyframes spin {
    0% {
        transform: translateY(-50%) rotate(0deg);
    }

    25% {
        transform: translateY(-50%) rotate(60deg);
    }

    50% {
        transform: translateY(-50%) rotate(180deg);
    }

    75% {
        transform: translateY(-50%) rotate(300deg);
    }

    100% {
        transform: translateY(-50%) rotate(360deg);
    }
}