.alert {
    position: relative;
    padding: 1rem 1rem;
    margin-bottom: 1rem;
    border: 1px solid transparent;
    border-radius: 0.25rem;
}
.alert-error {
    color: #842029;
    background-color: #f8d7da;
    border-color: #f5c2c7;
}
.alert-warning {
    color: #664d03;
    background-color: #fff3cd;
    border-color: #ffecb5;
}
.alert-info {
    color: #0c5460;
    background-color: #d1ecf1;
    border-color: #bee5eb;
}
.alert-success {
    color: #0f5132;
    background-color: #d1e7dd;
    border-color: #badbcc;
}



.hidden {
    display: none;
}

.urlh {
    display: none;
}