.loader{
        position: fixed;
        z-index: 99;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        background: #fff;
        display: flex;
        justify-content: center;
        align-items: center;
    }
    .loader> img{
        width: 100px;
    }
    .loader.hidden{
        animation: fadeOut 3s;
        animation-fill-mode: forwards;
    }
    @keyframes fadeOut{
        100%{
            opacity: 0;
            visibility: hidden;
        }
    }