.license-key {
    text-align:center;
}

.deactivate_domain {
    background:#e74c3c;
    border: none;
    -webkit-border-radius: 4px;
    -moz-border-radius: 4px;
    border-radius: 4px;
    color:#fff;
    font-weight:600;
    padding:5px 15px;
    border: none;
    -webkit-transition: background-color .3s ease;
    -moz-transition: background-color .3s ease;
    -o-transition: background-color .3s ease;
    transition: background-color .3s ease;
}

.deactivate_domain:hover  {
    background:#c0392b;
}