body {
    background: url(/assets/img/errorImage.jpg) no-repeat center fixed;
    -webkit-background-size: cover;
    -moz-background-size: cover;
    -o-background-size: cover;
    background-size: cover;
    position: relative;
}

.div-error-message {
    text-align: center;
    font-size: 20px;
    color: #FFF;
}