#preloader {
    background-color: green;
    width: 100vw;
    height: 100vh;
    position: fixed;
    top: 0;
    left: 0;
    z-index: 1001;
    display: flex;
    justify-content: center;
    align-items: center;
    transition: opacity 1s ease-in-out, visibility 1s ease-in-out;
}

.hide-loader {
    opacity: 0;
    visibility: hidden;
}