.preload{
    position: fixed; 
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    background-color: rgba(3, 6, 17, 0.589);
    transition: opacity 0.75s, visibility 0.75s;
}
.preload-hidden{
    opacity: 0;
    visibility: hidden;
}
.preload::after{
    content: "";
    width: 75px;
    height: 75px;
    border: 15px solid #dddddd;
    border-top-color: #010107;
    border-radius: 50%;
    animation: loading 0.75s ease infinite;
}
@keyframes loading{
    from{
        transform: rotate(0turn);
    }
    to{
        transform: rotate(1turn);
    }
}