web-accordion.css

ay-accordion,
ay-accordion-header {
  display: block;
}

[hidden] {
  display: none !important;
}

body {
  font-family: system-ui, sans-serif;
  margin: 0;
  padding: 0;

  color: #6b6b6b;
  background: #f1f1f1;
}

a[href] {
  color: #db003e;
}

a[href]:focus {
  color: #7a0023;
}

dl dt {
  font-size: 16px;
  font-family: monospace;
}

h1, h2, h3 {
  margin: 0;
  font-weight: 300;
  font-family: 'Fjalla One', serif;
}

h3 {
  border-bottom: 1px solid #e5e5e5;
  padding-top: 1rem;
  color: #3b3b3b;
}

p.lead {
  margin-top: 0;
  font-size: 1.25em;
}

pre, code {
  font-size: 16px;
  color: #333333;
  padding: 0.25rem;
  background: white;
  display: inline-block;
}

header {
  background: white;
  box-shadow: 0 2px 6px -1px rgba(0,0,0,0.3);
  padding: 1.1rem 1rem;
}

header h1 {
  color: #ff0046;
}

header .gh-logo {
  float: right;
  text-decoration: none;
  color: #6b6b6b;
}

.gh-logo svg {
  height: 2rem;
  width: 2rem;
}

ay-accordion-root {
  margin: 0 2rem;
}

ay-accordion {
  margin-top: 1rem;
  overflow: hidden;
  padding: 10px;
  border-radius: 7px;
  background: #fafafa;
}

ay-accordion ay-accordion-header:before {
  content: '';
  display: inline-block;
  border-left: 10px solid #58c4e0;
  border-right: 10px solid transparent;
  border-top: 8px solid transparent;
  border-bottom: 8px solid transparent;
  margin-top: 0.6rem;
  -ms-transform-origin: 5px 10px;
  -webkit-transform-origin: 5px 10px;
  transform-origin: 5px 10px;
  -webkit-transition: -webkit-transform 0.25s ease-in-out;
  transition: transform 0.25s ease-in-out;
  will-change: transform;
}

ay-accordion[open] ay-accordion-header:before {
  -ms-transform: rotate(90deg);
  -webkit-transform: rotate(90deg);
  transform: rotate(90deg);
}

.container {
  margin: 0px 20px;
}

ay-accordion-header {
  line-height: 1.5rem;
  color: black;
  cursor: pointer;
  margin: 0;
  font-weight: 300;
  font-family: 'Fjalla One', serif;
  font-size: 24px;
}

ay-accordion-header:focus {
  outline: none;
}

ay-accordion:focus-within {
  box-shadow: inset 0 0 5px rgba(0, 0, 0, 0.5);
}

footer {
  font-size: 0.8em;
  margin-top: 1rem;
  text-align: center;
}