rt script when document is finished loading
  window.addEventListener("load", start);
</script>

<!-- angle down icon -->

<template class="icon_angle_down">
  <!-- modified from: https://fontawesome.com/icons/angle-down -->
  <svg width="16" height="16" viewBox="0 0 448 512">
    <path
      fill="currentColor"
      d="M207.029 381.476L12.686 187.132c-9.373-9.373-9.373-24.569 0-33.941l22.667-22.667c9.357-9.357 24.522-9.375 33.901-.04L224 284.505l154.745-154.021c9.379-9.335 24.544-9.317 33.901.04l22.667 22