.control-loading {
    background-image: linear-gradient(90deg, #e2e2e2 0px, #efefef 30px, #e2e2e2 60px);
    background-size: calc(160px + 160px);
    animation: refresh 1.2s infinite ease-out;
    min-height: 200px;
}

@keyframes refresh {
    0% {
        background-position: calc(-160px);
    }
    60%, 100% {
        background-position: 160px;
    }
}