body {
  background:#f4f6f8;
  font-family:Arial;
}

.box {
  max-width:360px;
  margin:40px auto;
  padding:20px;
  background:white;
  border-radius:8px;
  text-align:center;
}

#drop-area {
  border:2px dashed #007bff;
  padding:30px;
  cursor:pointer;
}

.btns button {
  width:100%;
  margin:5px 0;
  padding:10px;
}

#progress {
  width:100%;
  background:#ddd;
  margin-top:10px;
}

#bar {
  height:10px;
  width:0;
  background:#2887a7;
}