.zloader {
    width: 100%;
    height: 100%;
    top: 0px;
    position: fixed;
    z-index: 99999;
    opacity: 0.5;
    background: black;
    display: flex !important;
    justify-content: center;
    align-items: center;
}

.zloader > img {
    width: 100px;
}

.zloader.hidden {
    animation: fadeOut 0.5s;
    animation-fill-mode: forwards;
}

.zloader.show {
    animation: fadeIn 0.5s;
    animation-fill-mode: forwards;
}

@keyframes fadeOut {
    100% {
        opacity: 0;
        visibility: hidden;
    }
}

@keyframes fadeIn {
    100% {
        opacity: 0.5;
        visibility: visible;
    }
}