* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: sans-serif;
  }
  
  body {
    width: 100vw;
    min-height: 100vh;
    background: url('./bg.jpg') no-repeat center center/cover;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: flex-start;
    padding: 20px;
  }
  /* heading */
  .top-header {
    display: flex;
    flex-direction: column;
    align-items: center;
    margin: 20px;
  }
  
  .heading {
    background: rgba(0, 0, 0, 0.5);
    padding: 15px 29px;
    border-radius: 20px;
    color: white;
    margin-bottom: 30px;
    max-width: 400px;
    text-align: center;
  }
  
  .heading h1 {
    font-size: 1.2em;
    font-weight: 700;
    text-shadow: 1px 1px 3px rgba(0, 0, 0, 0.7);
  }
  
  .heading h3 {
    font-size: 1.2em;
    font-weight: 400;
    text-shadow: 1px 1px 3px rgba(0, 0, 0, 0.5);
  }
  
  /* Logo */
  .logo {
    display: flex;
    justify-content: center;
    align-items: center;
    margin-bottom: 10px;
  }
  
  .logo img {
    width: 170px;
    height: 170px;
    border-radius: 50%;
  }
  
  .heading {
    text-align: center;
    color: white;
    margin-bottom: 20px;
  }
  
  .heading h1 {
    font-size: 2.5em;
  }
  
  .heading h3 {
    font-weight: 300;
    font-size: 1.2em;
  }
  
  /* Rules Section */
  .rules {
    background: rgba(0, 0, 0, 0.5);
    padding: 15px 25px;
    border-radius: 20px;
    color: white;
    margin-bottom: 30px;
    max-width: 400px;
    text-align: left;
  }
  
  .rules h2 {
    margin-bottom: 10px;
    font-size: 1.5em;
  }
  
  .rules ul {
    list-style: inside;
    line-height: 1.6em;
  }
  
  /* Form Container */
  .container {
    width: 350px;
    background: rgba(0, 0, 0, 0.4);
    backdrop-filter: blur(10px);
    border-radius: 40px;
    border: 3px solid  rgba(255, 255, 255, 0.5);
    box-shadow: 0 0 30px rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    padding: 20px 30px;
  }
  
  .container h2 {
    color: aqua;
    text-transform: uppercase;
    margin-bottom: 10px;
  }
  
  .form-group {
    position: relative;
    width: 100%;
    border-bottom: 3px solid aqua;
    margin: 25px 0;
  }
  
  .form-group input {
    width: 100%;
    height: 50px;
    background: transparent;
    border: none;
    outline: none;
    font-size: 1.2em;
    color: aqua;
    padding: 0 30px 10px 10px;
  }
  
  .form-group label {
    position: absolute;
    top: 50%;
    left: 10px;
    transform: translateY(-50%);
    font-size: 1.2em;
    color: aqua;
    transition: 0.3s ease;
  }
  
  input:focus ~ label,
  input:valid ~ label {
    top: -5px;
    font-size: 0.9em;
    color: aqua;
  }
  
  .form-group i {
    position: absolute;
    top: 50%;
    right: 10px;
    transform: translateY(-50%);
    color: aqua;
    font-size: 1.2em;
  }
  
  #btn {
    width: 100%;
    height: 50px;
    border-radius: 40px;
    border: none;
    font-size: 1.2em;
    text-transform: uppercase;
    font-weight: bold;
    margin-top: 20px;
    background-color: aqua;
    cursor: pointer;
    transition: 0.5s;
  }
  
  #btn:hover {
    background: skyblue;
    color: #000;
  }
  
  /* Payment Button */
  .pay-button {
    width: 80px;
    display: block;
    text-align: center;
    background-color: aqua;
    color: black;
    text-decoration: none;
    padding: 12px;
    margin-top: 20px;
    margin-bottom: 20px;
    margin-right: 20px;
    margin-left: 20px;
    border-radius: 30px;
    font-size: 1em;
    font-weight: bold;
    width: 100%;
    transition: 0.3s ease;
  }
  
  .pay-button:hover {
    background-color: #218838;
  }