.container {  
      max-width: 130px;  
      margin: 0 auto;  
      padding: 20px;  
 
      border-radius: 5px;  
    }  
  
    h2 {  
      text-align: center;  
    }  
  
    .form-group {  
      margin-bottom: 20px;  
    }  
  
    label {  
      display: block;  
      font-weight: bold;  
      margin-bottom: 5px;  
    }  
  
    input[type="text"],  
    input[type="button"] {  
      width: 100%;  
    
      font-size: 16px;  
      border-radius: 5px;  
      border: 1px solid #ccc;  
    }  
  
    input[type="button"] {  
      background-color: #4CAF50;  
      color: #fff;  
      cursor: pointer;  
    }