style.css

h1 {
  text-align: center;
  display: block;
}

#duplicate-button {
  margin: auto;
  color: #fff;
  background: #1565c0;
  border-radius: 100vh;
}

img#overview {
  max-width: 1000px;
  max-height: 600px;
  display: block;
  margin: auto;
}

img#style-image {
  max-width: 1000px;
  max-height: 600px;
  display: block;
  margin: auto;
}