header {
  background-color: #333;
  padding: 10px;
}

nav ul {
  list-style: none;
  padding: 0;
  display: flex;
  justify-content: center;
}

nav li {
  margin: 0 10px;
}

nav a {
  text-decoration: none;
  color: white;
}

nav a:hover {
  color: #ccc;
}

body {
  font-family: sans-serif;
}

.container {
  max-width: 800px;
  margin: 0 auto;
  text-align: center;
}

.dropzone {
  border: 2px dashed #ccc;
  width: 100%;
  height: 200px;
  margin-bottom: 30px;
}

.row {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 30px;
}

.image-container {
  flex: 1;
  max-width: 45%;
  margin: 0 15px 30px;
}

img {
  max-width: 100%;
  height: auto;
}

#file-label {
  display: inline-block;
  background-color: #333;
  color: white;
  padding: 5px 10px;
  cursor: pointer;
  border-radius: 5px;
}

#file-label:hover {
  background-color: #444;
}