.vertical-center{
    margin: 0;
    position: absolute;
    top: 50%;
    -ms-transform: translateY(-50%);
    transform: translateY(-50%);
}
.horizontal-center{
    width: 99%;
    text-align: center;
}
.error{
    font-size: 100px;
}
.container {
    height: 90vh;
    position: relative;
}