.preloader {
    position: fixed;
    width: 100%;
    height: 100%;
    overflow: hidden;
    display: none;
    align-items: center;
    justify-content: center;
    background-color: white;
    z-index: 9999;
}

.preloader.active {
    display: block;    
}

.preloader-icon {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    opacity: 0;
}

.preloader-icon.active {
    opacity: 1;
}

@keyframes op_preloader {
    0%{opacity: 1;}
    100%{opacity: 0;}
}