#loader{
    position: fixed;
    top: 0;
    width: 100%;
    height: 100%;
    background: rgb(0,0,0);
    background: linear-gradient(45deg, rgba(0,0,0,0.5018382352941176) 16%, rgba(0,0,0,0.3897934173669467) 85%);
    z-index: 1000;
}

#content {
    width: 100%;
    position: absolute;
    top: 50%;
    left: 45%;
    color: #fff;
}