div.error {
    position: relative;
    top: 45px;
}

div.error span.error_number {
    display: block;
    text-align: center;
    font-size: 120px;
    font-weight: 700;
    line-height: 100px;
}

div.error span.error_description {
    display: block;
    text-align: center;
    font-size: 20px
}