.loading {
    position: absolute;
    top: 35%;
    left: 34%;
    width: 66%;
    height: 65%;
    opacity: 1;
    animation: loader 3s ease infinite;
}

    .loading img {
        height: 50%;
        width: 50%;
    }

@keyframes loader {
    50% {
        opacity: 0;
    }

    100% {
        opacity: 1;
    }
}