seahub/frontend/src/css/invitations.css

.invite-accept-icon {
    color: green;
    margin-left: 0.5rem;
    font-size: 1.25rem;
    font-style: normal;
    line-height: 1;
    vertical-align: middle;
}

.invite-link-in-popup,
.invite-link-in-popup:hover {
    text-decoration: none;
}

.invite-link-icon-in-popup {
    color: #f89a68;
    margin-left: 0.5rem;
    font-size: 0.875rem;
    font-style: normal;
    line-height: 1;
    cursor: pointer;
    vertical-align: middle;
}