style3.css

/* styles.css */

body {
    font-family: 'Arial', sans-serif;
    margin: 0;
    padding: 0;
    background-image:url("images/pexels-luis-dalvan-1770809.jpg");
    background-repeat: no-repeat;
    background-size: 100% 100%;
  }
  
  .container {
    max-width: 600px;
    opacity:0.9;
    margin: 50px auto;
    background-color: #fff;
    padding: 20px;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
  }
  
  h1 {
    text-align: center;
    color: #333;
  }
  
  .input-group {
    margin-bottom: 20px;
  }
  
  label {
    display: block;
    margin-bottom: 5px;
    color: #555;
  }
  
  input {
    width: 100%;
    padding: 8px;
    box-sizing: border-box;
    border: 1px solid #ccc;
    border-radius: 4px;
  }
  
  button {
    display: block;
    width: 100%;
    padding: 10px;
    background-color: #4caf50;
    color: #fff;
    border: none;
    border-radius: 4px;
    cursor: pointer;
  }
  
  button:hover {
    background-color: #45a049;
  }
  
  #result {
    margin-top: 20px;
    padding: 10px;
    background-color: #dff0d8;
    border: 1px solid #d6e9c6;
    color: #3c763d;
    border-radius: 4px;
  }