body {
  font-family: Arial;
  text-align: center;
  margin: 0;
  padding: 0;
}

.background {
  background: url('images/bg.jpg') no-repeat center center fixed;
  background-size: cover;
  min-height: 100vh;
  padding: 40px 20px;
  color: white;
  text-shadow: 1px 1px 2px #000;
}

.container {
  display: flex;
  justify-content: space-around;
  margin-top: 30px;
  flex-wrap: wrap;
}

.letters, .dropzones {
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
  justify-content: center;
}

.letter {
  background: #4caf50;
  color: white;
  padding: 20px;
  font-size: 24px;
  border-radius: 8px;
  cursor: grab;
}

.dropzone {
  width: 200px;
  height: 140px;
  border: 2px dashed #fff;
  border-radius: 8px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  background: rgba(255, 255, 255, 0.2);
  color: #fff;
}

.dropzone img {
  width: 60px;
  height: auto;
}

#message {
  margin-top: 30px;
  font-size: 24px;
  font-weight: bold;
}