body {
    font-family: Arial, sans-serif;
    background-color: #4158D0;
    background-image: linear-gradient(43deg, #4158D0 0%, #C850C0 46%, #FFCC70 100%);
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    margin: 0;
  }
  
  .container {
    background: #fff;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
    text-align: center;
  }
  
  h1 {
    margin-bottom: 20px;
  }
  
  form p {
    margin: 10px 0;
  }
  
  input {
    padding: 8px;
    width: calc(100% - 16px);
    margin-top: 5px;
    box-shadow: 0 0 5px rgba(0, 26, 255, 0.23);
    border-radius: 7px;
  }
  
  button {
    padding: 10px 20px;
    background-color: #007bff;
    color: white;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    box-shadow: 0 0 10px rgba(57, 3, 255, 0.17);
  }
  
  button:hover {
    background-color: #0056b3;
  }
  
  #results {
    margin-top: 20px;
    font-weight: bold;
  }
  
  #weight-guide {
    margin-top: 30px;
    text-align: left;
  }