<style>
#attend-form {
    display: none; /* Hide the form by default */
}

/* Style for the loading spinner */
.lds-ring {
  /* change color here */
  color: #1c4c5b
    text-align: center;
}
.lds-ring,
.lds-ring div {
  box-sizing: border-box;
}
.lds-ring {
  display: inline-block;
  position: relative;
  width: 50px;
  height: 50px;
}
.lds-ring div {
  box-sizing: border-box;
  display: block;
  position: absolute;
  width: 34px;
  height: 34px;
  margin: 8px;
  border: 4px solid currentColor;
  border-radius: 50%;
  animation: lds-ring 1.2s cubic-bezier(0.5, 0, 0.5, 1) infinite;
  border-color: currentColor transparent transparent transparent;
}
.lds-ring div:nth-child(1) {
  animation-delay: -0.45s;
}
.lds-ring div:nth-child(2) {
  animation-delay: -0.3s;
}
.lds-ring div:nth-child(3) {
  animation-delay: -0.15s;
}
@keyframes lds-ring {
  0% {
    transform: rotate(0deg);
  }
  100% {
    transform: rotate(360deg);
  }
}
</style>
<div class="lds-ring"><div></div><div></div><div></div><div></div></div>
<script src="https://code.jquery.com/jquery-3.6.0.min.js"></script>
<script>
$(document).ready(function() {
    // Show loading spinner when page starts loading
    $(".lds-ring").show();

    // Hide loading spinner when page has finished loading
    $(window).on("load", function() {
        $(".lds-ring").hide();
        $("#attend-form").show(); // Show the form after loading
    });
});
</script>