.signup-panel {
    border-color: #dee2e6;
    border-width: 1px;
    border-style: solid;
    border-top-style: none;
    padding: 10px;
    margin-bottom: 15px;
}
.approverEmail {
    margin-top: 36px;
}
.username-checking {
    color: gray;
    font-size: 13px;
}
.username-available {
    color: green;
    font-size: 13px;
}
.username-unavailable, .username-invalid, .field-error {
    color: red;
    font-size: 13px;
}
.explain {
    font-size: 12px;
    font-style: italic;
    margin-top: 6px;
}