.loading {
    width: 100%;
    height: 100%;
    position: fixed;
    left: 0;
    right: 0;
    top: 0;
    bottom: 0;
    
    z-index: 10000;
    text-align: center;
    justify-content: center;
    align-content: center;
    display: flex;
}
    .loading .content {
        top: 50%;
        position: absolute;
        transform: translate(0,-50%);
        color: #689cc5;
        font-weight: bold;
    }
        .loading .content img {
            width: 100px;
            height: 100px;
            display: block;
        }