.loading {
    position: fixed;
    z-index: 1000;
    width: 100%;
    height: 100vh;
    margin: 0;
    padding: 0;
    background: #fdfdfd;
}

.loading.hide {
    opacity: 0;
    pointer-events: none;
    transition: opacity 500ms;
}

.loading .circle {
    display: block;
    position: relative;
    top: calc(50% - 20px);
    width: 40px;
    height: 40px;
    margin: 0 auto;
    border: 8px solid #e0e0e0;
    border-top: 7px solid #000;
    border-radius: 50px;
    animation: loading 700ms linear 0ms infinite normal both;
}

@keyframes loading {
    0% {
        transform: rotate(0deg);
    }

    100% {
        transform: rotate(360deg);
    }
}