body{
    font-family: Arial, sans-serif;
    background:#111;
    color:white;
    text-align:center;
    margin:0;
    padding:30px;
}
.container{
    max-width:900px;
    margin:0 auto;
}
audio{
    width:100%;
    margin-top:20px;
}
button, select{
    padding:10px 16px;
    margin:5px;
    font-size:16px;
    border-radius:8px;
    border:none;
}
button{
    cursor:pointer;
}
.row{
    margin:20px 0;
}
.info{
    margin-top:20px;
    color:#ccc;
    font-size:14px;
}