html, body {
    background: unset !important;
    text-align: center;
}

.error-code {
    font-size: 10rem;
}

.card-header {
    margin-bottom: 50px;
}
.card-header img {
    max-width: 80px;
    margin-bottom: 10px;
}
.card-header h2 {
    max-width: 300px;
    margin: 0 auto;
}

.card-body {
    border-radius: 20px;
    border: 1px solid #ddd !important;
    padding: 20px;
}
.card-body img {
    max-width: 70px;
    margin-bottom: 20px;
}
.card-body .row {
    margin-top: 15px;
}

.card-footer {
    border: unset;
    margin-top: 30px;
}