.w3-container {
  max-width: 600px;
  margin: auto;
  padding: 20px;
}

.upload-section {
  text-align: center;
}

.image-section {
  text-align: center;
}

.image-container {
  position: relative;
  display: inline-block;
}

.added-text {
  position: absolute;
  bottom: 5%;
  right: 5%;
  font-size: 4vw;
}

.preview-container {
  text-align: center;
}

#w3-previewImage {
  max-width: 100%;
}

.addtext-button {
  margin-top: 20px;
}