.detail_region_little {
    color: #present;
    background: linear-gradient(to right, present, present);
    padding: 10px;
    border: 1px solid #present;
    animation: detail_region_little 2s ease-in-out infinite;
}

@keyframes detail_region_little {
    from {
        opacity: 0;
        transform: translateX(-50%);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}