* {
  --gc-light-gray: rgb(161, 161, 161);
  --gc-red: rgb(226, 38, 48);
  --gc-dark: rgb(16, 17, 26);
}

details {
  width: 100%;
  margin: 0 auto;
  margin-bottom: .5rem;
  overflow: hidden;
  position: relative;
  transition: all 500ms ease-in;
}

details[open] {
  margin: 0 auto;
  margin-bottom: 1em;
}

details > article {
  border: solid 2px var(--gc-dark);
  padding-left: 0.5em;
  padding-right: 0.5em;
  z-index: 0;
  opacity: 0;
  height: 0;
  overflow: hidden;
  transition: all 500ms ease-in;
  animation: fadeOut 500ms ease-in forwards;
}

details[open] > article {
  border: solid 2px var(--gc-dark);
  height: auto;
  padding-left: 0.5em;
  padding-right: 0.5em;
  translate: 0 0;
  scale: 100%;
  opacity: 1;
  animation: fadeIn 500ms ease-in forwards;
}

summary {
  color: white;
  background: var(--gc-red);
  position: relative;
  cursor: pointer;
  user-select: none;
  padding: 0.5em 1em;
  z-index: 1;
  transition: background-color 200ms ease-in;
}

details[open]>summary {
  background-color: var(--gc-dark);
}

summary:hover {
  background: var(--gc-dark);
}

details[open]>summary:before {
  transform: rotate(90deg);
}

details summary::-webkit-details-marker {
  display: none;
}

@keyframes fadeIn {
  from {
      opacity: 0;
      translate: 0 -10rem;
      scale: 100% 150%;
  }

  to {
      opacity: 1;
      translate: 0 0;
      scale: 100%;
  }
}

@keyframes fadeOut {
  from { 
      opacity: 1; 
      translate: 0 0;
      scale: 100%;
  }
  to { 
      opacity: 0; 
      translate: 0 -10rem; 
      scale: 100% 150%;
  }
}

details article p {
  margin: .25em 0 .25em 0;
}

details article h2,
details article h3,
details article h4,
details article h5,
details article h6 {
  margin: 0 0 .5em 0;
}

details article span {
  color: var(--gc-red);
  font-weight: bolder;
}

details article > ol {
  display: block;
  list-style-type: none;
  margin: 0 0 0 0;
  padding-left: 2em;
  counter-reset: dropdown-2nd-counter;
}

details article li {
  margin: .25em 0 0 0;
  position: relative;
}

details article li:last-child {
  margin: .25em 0 .5em 0;
}

details article ol > li::before {
  content: counter(dropdown-counter);
  counter-increment: dropdown-counter;
  position: absolute;
  left: -2.2em;
  top: .2em;
  width: 1.2em;
  border-radius: 1em;
  padding: .25em;
  background-color: var(--gc-red);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: .5em;
  color: white;
}

details article ul li {
  margin: 0 0 1em 0;
  padding-left: 0.5em;
}

details article ol li {
  display: block;
  list-style-type: none;
  margin: 0 0 0.5em 0;
  padding-left: 1em;
}

details article ul {
  margin-left: 1em;
}