.overlay {
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    position: fixed;
    background: rgba(171, 171, 171, 0.4);
    z-index: 1000000;
}

.overlay__inner {
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    position: absolute;
}

.overlay__content {
    left: 50%;
    position: absolute;
    top: 50%;
    transform: translate(-50%, -50%);
}

.spinner {
    width: 50px;
    height: 50px;
    display: inline-block;
    border-width: 4px;
    border-color: rgba(255, 255, 255, 0.05);
    border-top-color: #fff;
    animation: spin 1s infinite linear;
    border-radius: 100%;
    border-style: solid;
}