.overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0,0,0,0.9);
    z-index: 1;
    text-align: center;
}

.overlay_text {
    padding-right: 15px;
    padding-left: 15px;
    width: 100%;
    color: white;
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
}

.overlay_text > span, .overlay_text ol {
    display: block;
    margin-top: 20px;
    font-size: x-large;
}

.overlay_text ol {
    text-align: start;
    align-items: center;
    display: inline-block;
}