styles.css

  body {
      font-family: Monospace, sans-serif;
      text-align: center;
    color: white;
    background-color: black;
    background: url('payment.png');
    display: flex;
    align-content: center;
    justify-content: center; 
    align-items: center; 
    height: 100vh; 
    margin: 0;
  }
.verify-payment::-webkit-scrollbar {
  width: 10px;
  background-color: rgba(0, 0, 0);
  border-radius: 15px;
  margin-left: 10px;
}

.verify-payment::-webkit-scrollbar-thumb {
  background-color: rgba(255, 255, 255);
  box-shadow: 0 10px 40px -10px #fff;
  border-radius: 5px;
  margin-left: 10px;
}

.verify-payment::-webkit-scrollbar-thumb:hover {
  background-color: rgba(255, 255, 255, 0.8);
}
.verify-payment {
  max-width: 70%;
  max-height: 90%;
  background-color: rgba(45, 45, 45, 0.4);
  backdrop-filter: blur(20);
  padding: 20px;
  border-radius: 25px;
  overflow-y: scroll;
}

input {
  background-color: rgba(255, 255, 255, 0.3);
  color: white;
  border-radius: 25px;
  padding: 5px;
  text-align: center;
  font-family: monospace;
  border: 1px solid transparent;
  transition: all 0.3s;
  outline: none;
  width: 35%;
}

input:hover {
  transform: scale(1.1);
}

input:selection {
  width: 45%;
}

button {
  background-color: rgba(255, 255, 255, 0.3);
  color: white;
  border-radius: 25px;
  padding: 5px;
  text-align: center;
  font-family: monospace;
  border: 1px solid transparent;
  transition: all 0.3s;
  outline: none;
}

button:hover {
  transform: scale(1.1);
  cursor: pointer;
}
.loading {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 1);
  display: flex;
  justify-content: center;
  align-items: center;
  transition: all 0.5s;
}

.loader {
  border: 8px solid #ffffff;
  border-radius: 50%;
  border-top: 8px solid #000000;
  width: 50px;
  height: 50px;
  animation: spin 0.8s linear infinite;
  transition: all 0.5s;
}

@keyframes spin {
  0% { transform: rotate(0deg); }
  50% {transform: rotate(180deg) scale(1.2);}
  100% { transform: rotate(360deg); }
}