.button_keychain {
    background: url(/styles/resource/images/login/keychain.png) no-repeat scroll 0 0 transparent;
    background-size: cover;
    background-color: #212529;
    cursor: pointer;
    font-weight: bold;
    height: 40px;
    padding-bottom: 2px;
    width: 180px;
    border-radius: 8px;
}