body {
    font-family: Arial, sans-serif;
    background: linear-gradient(to bottom, rgba(255,255,255,0.15) 0%, rgba(0,0,0,0.15) 100%), radial-gradient(at top center, rgba(255,255,255,0.40) 0%, rgba(0,0,0,0.40) 120%) #989898;
    background-blend-mode: multiply,multiply;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    margin: 0;
    padding: 0;
}

.container {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background: white;
    border-radius: 15px;
    box-shadow: rgba(0, 0, 0, 0.24) 0px 3px 8px;
    padding: 30px;
    text-align: center;
}

h1 {
    color: #333;
    font-size: 24px;
}

input {
    width: 400px;
    padding: 10px;
    margin: 15px 0;
    border-radius: 8px;
    border: 1px solid #ccc;
    font-size: 16px;
}

button {
    background-color: red;
    color: white;
    border: none;
    padding: 12px 20px;
    width: 100%;
    margin-top: 10px;
    cursor: pointer;
    font-size: 16px;
    border-radius: 8px;
    transition: background-color 0.3s;
}

button:hover {
    background-color: #45a049;
}

#qr-container {
    margin: 20px 0;
}

#download-btn {
    display: none;
    background-color: #007bff;
    color: white;
    padding: 12px 20px;
    border-radius: 8px;
    font-size: 16px;
    transition: background-color 0.3s;
}

#download-btn:hover {
    background-color: #0056b3;
}
 /*responsive*/
  @media(max-width: 700px){
    .container input{
      width: 100%;
      text-align: center;
  }
  }
  @media(max-width: 400px){
    .container input{
      width: 100%;
      text-align: center;
  }
}
  @media(max-width: 200px){
    .container input{
      width: 50%;
      text-align: center;
  }
  }