@media (max-width: 600px) {
  .container {
    margin: 20px auto;
    padding: 10px;
  }

  .upload-btn-wrapper {
    padding: 5px 15px;
  }

  h2 {
    font-size: 1.5em;
  }

  p {
    font-size: 0.875em;
    line-height: 1.5;
  }
}

body {
  font-family: Arial, sans-serif;
  background-color: #f8f9fa;
  line-height: 1.5;
  padding: 20px;
}

.container {
  max-width: 600px;
  margin: 50px auto;
  padding: 20px;
  background-color: #fff;
  border-radius: 10px;
  box-shadow: 0 0 15px rgba(0, 0, 0, 0.1);
  text-align: center;
}

.upload-btn-wrapper {
  position: relative;
  overflow: hidden;
  display: inline-block;
  background-color: #007bff;
  color: #fff;
  border-radius: 5px;
  padding: 10px 25px;
  cursor: pointer;
  transition: background-color 0.3s;
}

.upload-btn-wrapper:hover {
  background-color: #0056b3;
}

.upload-btn-wrapper input[type="file"] {
  font-size: 100px;
  position: absolute;
  left: 0;
  top: 0;
  opacity: 0;
}