body {
  background: #000;
  color: #fff;
  font-family: Arial, sans-serif;
  margin: 0;
  padding: 0;
}
.calculator-container {
  max-width: 600px;
  margin: 30px auto;
  background: #1e1e1e;
  padding: 20px;
  border-radius: 10px;
  text-align: center;
}
.logo {
  max-width: 200px;
  display: block;
  margin: 0 auto 20px;
}
label {
  display: block;
  margin-top: 15px;
  text-align: left;
}
input, select {
  width: 80%;
  padding: 10px;
  margin-top: 5px;
  border: 1px solid #555;
  background: #333;
  color: white;
  border-radius: 5px;
}
button {
  margin-top: 20px;
  padding: 10px;
  width: 80%;
  background: #ff6600;
  color: white;
  border: none;
  border-radius: 5px;
  cursor: pointer;
}
.scale-img {
  width: 100%;
  margin-top: 10px;
  border-radius: 6px;
}
#bodyLabel {
  margin-top: 10px;
  font-style: italic;
}