#weight-converter {
  max-width: 50%;
  width: 100%;
  margin: 25px auto;
  padding: 25px;
  border: 1px solid #999;
  border-radius: 15px;
  background-color: #e0e0e0;
}
#weight-converter h2 {
  text-align: center;
  color: #0056b3;
  margin-bottom: 15px;
  font-size: 1.5em;
  font-weight: bold;
  line-height: 1em;
}
#calcBtn-blue, #calcBtn-grey {
  display: block;
  width: 100%;
  padding: 12px 20px;
  border: none;
  border-radius: 8px;
  font-size: 1.1em;
  cursor: pointer;
  transition: all 0.3s ease;
  margin-top: 15px;
  font-weight: bold;
  color: white;
}
#calcBtn-blue {
  background: linear-gradient(45deg, #007bff, #0056b3);
  box-shadow: 0 4px 10px rgba(0,123,255,0.3);
}
#calcBtn-grey {
  background: linear-gradient(45deg, #6C757D, #687178);
  box-shadow: 0 4px 10px rgba(95,102,109,0.3);
}
#calcBtn-blue:hover {
  background: linear-gradient(45deg, #0056b3, #003f7f);
  box-shadow: 0 6px 15px rgba(0,123,255,0.4);
  transform: translateY(-2px);
}
#calcBtn-grey:hover {
  background: linear-gradient(45deg, #687178, #5F666D);
  box-shadow: 0 6px 15px rgba(95,102,109,0.4);
  transform: translateY(-2px);
}
.input {
  width: 100%;
  padding: 10px;
  margin-bottom: 10px;
  border: 1px solid #ccc;
  border-radius: 5px;
  box-sizing: border-box;
  font-size: 1em;
  background-color: white;
}
.converted-value {
  font-weight: bold;
  font-size: 1.3em;
  margin-top: 6px;
  text-align: center;
}
#weightResults {
  display: none;
  margin-top: 20px;
  border: 2px solid #0073aa;
  padding: 15px;
  border-radius: 10px;
  background-color: #ffffff;
  line-height: 1.5;
  text-align: center;
}