span.google-login-icon {
    background: url('../icon/g-icon.png') no-repeat;
    display: inline-block;
    vertical-align: middle;
    background-size: 20px 20px;
    height: 24px;
    width: 24px;
}

.btn-google-login {
    background: #ffffff;
    border-color: #000000;
    color: #000000;
}