body{

font-family:sans-serif;

background:#f4f4f4;

margin:0;

padding:20px;

}

.container{

max-width:700px;

margin:auto;

background:white;

padding:20px;

border-radius:10px;

}

input{

width:100%;

padding:12px;

box-sizing:border-box;

font-size:16px;

}

button{

margin-top:10px;

padding:10px 18px;

font-size:16px;

cursor:pointer;

}

#status{

margin-top:15px;

color:#666;

}

.track{

padding:8px 0;

border-bottom:1px solid #eee;

}