.center {
    margin: 0;
    position: absolute;
    top: 40%;
    left: 50%;
    margin-right: -50%;
    transform: translate(-50%, -50%)
}

.loader {
    margin: 0;
    position: absolute;
    height: 80px;
    top: 80%;
    left: 50%;
    margin-right: -50%;
    transform: translate(-50%, -50%)
}