.guide-container h2 {
  padding: 20px 0;
  border-bottom: 1px solid #eee;
  text-align: center;
  font-size: 2em;
  font-weight: bold;
  margin-top: 2em;
}
.guide-content {
  margin-top: 0;
  padding-top: 0;
}
.guide-content h3 {
  font-size: 2em;
  font-weight: bold;
  margin-top: 0;
  padding: 0.5em 1em;
  border-left: 5px solid #333;
  line-height: 1.5em;
  display: flex;
  gap: 15px;
  flex-direction: column;
  align-items: flex-start;
}
.guide-content h3 span {
  font-size: 0.8em;
  font-weight: normal;
  background: #333;
  color: #fff;
  padding: 0.2em 0.8em;
  line-height: 1.5em;
  letter-spacing: 0px;
}
.guide-content > div {
  display: none;
  opacity: 0;
  transition: opacity 0.5s ease-in-out;
}
.guide-content > div.active {
  display: block;
  padding-top: 2em;
  margin-bottom: 2em;
  opacity: 1;
}
.guide-content > div > div {
  display: grid;
  grid-template-columns: 1fr 1fr;
  justify-content: center;
  align-items: flex-start;
  gap: 50px 20px;
  padding: 30px;
  background: #f9f9f9;
  border-radius: 10px;
  font-size: 1.1em;
}
.guide-content p {
  font-size: 1.1em;
}
.guide-content img {
  max-width: 100%;
  height: auto;
  box-shadow: 0 0 5px #eee;
}
.guide-footer-navigation {
  display: flex;
  justify-content: space-between;
  padding: 20px;
  margin-top: 2em;
}
.guide-footer-navigation a {
  text-decoration: none;
  color: #fff;
  background-color: #333;
  padding-top: 0.4em;
  padding-bottom: 0.3em;
  font-size: 1.3em;
  line-height: 1.5em;
  border-radius: 5px;
  letter-spacing: 2px;
  position: relative;
}
.guide-footer-navigation a:hover {
  background: #111;
  opacity: 1;
}
.guide-footer-navigation .prev-link {
  margin-right: auto;
  padding-left: 2em;
  padding-right: 1em;
}
.guide-footer-navigation .next-link {
  margin-left: auto;
  padding-left: 1em;
  padding-right: 2em;
}
.return-page a {
  margin-top: 2.5em;
  position: relative;
  color: #000;
  padding-left: 2em;
  display: inline-block;
}
.guide-footer-navigation .prev-link:before,
.return-page a:before {
  content: "<";
  position: absolute;
  top: 50%;
  left: 1.5em;
  font-size: 0.7em;
  line-height: 0;
  transform: translateY(-50%);
  transition: left 0.3s ease;
}
.guide-footer-navigation .next-link:after {
  content: ">";
  position: absolute;
  top: 50%;
  right: 1.5em;
  font-size: 0.7em;
  line-height: 0;
  transform: translateY(-50%);
  transition: right 0.3s ease;
}
.guide-footer-navigation .prev-link:hover:before,
.return-page a:hover:before {
  left: 1em;
}
.guide-footer-navigation .next-link:hover:after {
  right: 1em;
}

#single-delivery, #multiple-delivery {
  display: none;
  opacity: 0;
  transition: opacity 0.5s ease-in-out;
}
#single-delivery.active, #multiple-delivery.active {
  display: grid;
  opacity: 1;
}
.guide-content > div > div.delivery-toggle-container {
  background: none;
  padding: 0;
  margin: 50px 0;
  text-align: center;
  font-size: 1.2em;
  font-weight: bold;
}
.delivery-toggle {
  cursor: pointer;
  padding: 10px;
  margin: 5px;
  background-color: #f0f0f0;
  border-radius: 5px;
  display: inline-block;
}
.delivery-toggle.active {
  background-color: #333;
  color: #fff;
}
.delivery-toggle span {
  display: inline-block;
}

@media screen and (max-width: 768px) {
  .guide-container h2 {
    font-size: 1.8em;
    padding: 20px 0 0;
  }
  .guide-content h3 {
    font-size: 1.8em;
    gap: 10px;
  }
  .guide-content > div > div {
    grid-template-columns: 1fr;
    gap: 10px;
    padding: 15px;
    border-radius: 5px;
    font-size: 1.2em;
  }
  .guide-content > div > div.delivery-toggle-container {
    grid-template-columns: 1fr 1fr;
    margin: 20px 0;
  }
  .guide-content p {
    font-size: 1.2em;
  }
}