Untitled

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <title>Credit card form</title>
  <style>
    body {
      font-family: sans-serif;
    }

    form {
      width: 370px;
    }

    label {
      display: block;
      margin-bottom: 24px;
      font-size: 18px;
    }

    input {
      padding: 8px;
      font-size: 18px;
      width: 100%;
      margin-top: 4px;
    }

    button {
      display: block;
      padding: 20px 40px;
      margin: 0 auto;
      font-size: 18px;
      background: seagreen;
      color: white;
      border: none;
    }
  </style>
</head>

<body>
  <form
    method="post"
    action="/submit-credit-card"
    target="_parent"
  >
    <label>
      Name on the card<br>

      <input name="ccname" autofocus/>
    </label>

    <label>
      Credit card number<br>

      <input name="cardnumber"/>
    </label>

    <label>
      CVC<br>

      <input name="cvc"/>
    </label>

    <label>
      Expiry date<br>

      <input name="cc-exp"/>
    </label>

    <button>
      Submit
    </button>
  </form>
</body>
</html>