.payment_submit_button {
  background: #1d365e !important;
  color: white !important;
  padding: 5px 30px !important;
}
#stripe_submit_form input {
  max-width: 500px;
}

/* HTML: <div class="loader"></div> */
/* HTML: <div class="loader"></div> */
.loader {
  width: 60px;
  aspect-ratio: 2;
  --_g: no-repeat radial-gradient(circle closest-side, #000 90%, #0000);
  background: var(--_g) 0% 50%, var(--_g) 50% 50%, var(--_g) 100% 50%;
  background-size: calc(100% / 3) 50%;
  animation: l3 1s infinite linear;
}
@keyframes l3 {
  20% {
    background-position: 0% 0%, 50% 50%, 100% 50%;
  }
  40% {
    background-position: 0% 100%, 50% 0%, 100% 50%;
  }
  60% {
    background-position: 0% 50%, 50% 100%, 100% 0%;
  }
  80% {
    background-position: 0% 50%, 50% 50%, 100% 100%;
  }
}