.btn_spanish{
    width: 30px;
    height: 30px;
    border-radius: 15px;
    border: none;
    background: url('https://imgur.com/tIHYexG.png') no-repeat center;
    background-size: 30px 30px;
}

.btn_peru{
    width: 30px;
    height: 30px;
    border-radius: 15px;
    border: none;
    background: url('https://imgur.com/2YTvmoK.png') no-repeat center;
    background-size: 40px 40px;
}

.btn_brazil{
    width: 30px;
    height: 30px;
    border-radius: 15px;
    border: none;
    background: url('https://imgur.com/6pCLHJP.png') no-repeat center;
    background-size: 40px 40px;
}

.btn_usa{
    width: 30px;
    height: 30px;
    border-radius: 15px;
    border: none;
    background: url('https://imgur.com/J7nIMv1.png') no-repeat center;
    background-size: cover;
}