body{
  font-family:sans-serif;
  background:#f4f6f9;
  display:flex;
  justify-content:center;
  padding:30px;
}

.card{
  background:white;
  padding:25px;
  border-radius:14px;
  width:420px;
  text-align:center;
  box-shadow:0 10px 25px rgba(0,0,0,0.08);
}

.tagline{
  font-size:14px;
  color:#555;
  margin-bottom:15px;
}

.note{
  font-size:13px;
  color:#888;
  margin-bottom:10px;
}

.controls{
  margin-top:10px;
}

select,input,button{
  width:100%;
  margin-top:12px;
}

canvas{
  width:100%;
  margin-top:15px;
  border:1px solid #ddd;
  background:white;
}

button{
  padding:12px;
  font-size:16px;
  cursor:pointer;
}