mystyle.css

body {
  text-align: center;
}
button {
  width: 100px;
  height: 30px;
}
#popup {
  display: none;
  width: 100%;
  height: 100%;
  top: 0;
  left: 0;
  position: fixed;
  background-color: rgba(50, 50, 50, 0.9);
}
#form {
  position: absolute;
  background-color: #f5f5f5;
  border: 1px solid #212121;
  border-radius: 2px;
  padding: 20px;
  width: 300px;
  left: 50%;
  top: 10%;
  margin-left: -150px;
}
input {
  width: 250px;
  margin-bottom: 20px;
}
#close {
  position: absolute;
  font-weight: bold;
  margin-left: 139px;
  margin-top: -19px;
  width: 30px;
  height: 27px;
}
p1 {
  float: left;
  margin-left: 30px;
}
.cont {
  background-color: #e3f2fd;
  border-radius: 2px;
  padding: 20px 50px;
  width: 350px;
  margin: 10px auto 10px auto;
  text-align: left;
  overflow: auto;
}
#add {
  margin: 10px;
}



 .modal {
      display: none;
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      background-color: rgba(0, 0, 0, 0.5);
      z-index: 10;
    }

    .modal-content {
      position: absolute;
      top: 50%;
      left: 50%;
      transform: translate(-50%, -50%);
      padding: 20px;
      background-color: #fff;
      border: 1px solid #ccc;
      box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
    }

    .close {
      position: absolute;
      top: 10px;
      right: 10px;
      font-size: 20px;
      font-weight: bold;
      cursor: pointer;
    }

     .overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: 99; /* Use a z-index lower than the popup to ensure it's behind the popup */
    display: none; /* Initially hidden */
  }

  .payment-info-popup {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background-color: #fff;
    padding: 20px;
    border: 1px solid #ccc;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.3);
    z-index: 100;
  }

  .popup-header {
    text-align: center;
    margin-bottom: 10px;
  }

  .popup-footer {
    text-align: center;
    margin-top: 10px;
  }