.preload-tooltip {
    position: fixed;
    bottom: 10px;
    left: 10px;
    background-color: rgba(0, 0, 0, 0.8);
    color: white;
    padding: 5px 10px;
    border-radius: 5px;
    font-size: 12px;
    display: none; 
    z-index: 1000;
    box-shadow: 0px 2px 5px rgba(0, 0, 0, 0.2);
}

.btn-preload:hover + .preload-tooltip {
    display: block;
}