Accordion

Classic + open more than one

.multi-select {
  position: absolute;
  display: inline-block;
  top: 0;
  right: 0;
}

.accordion-title {
  padding: 5px 10px;
  border-bottom: 1px solid lightgray;
  font-size: 1.5em;
  color: darkgray;
}

.accordion {
  position: relative;
}

.accordion .title-section {
  border-bottom: 1px solid lightgray;
  cursor: pointer;
}

.accordion .title-section .title {
  display: inline-block;
  padding: 5px 10px;
  font-weight: 600;
}

.accordion .title-section .expand-icon {
  display: inline-block;
  height: 20px;
  width: 20px;
  background-image: url("../../assets/icons/down-icon.png");
  background-repeat: no-repeat;
  background-position: 50%;
  background-size: cover;
  cursor: pointer;
  position: absolute;
  right: 5px;
  top: 5px;
}

.accordion .title-section .collapse-icon {
  display: inline-block;
  height: 20px;
  width: 20px;
  background-image: url("../../assets/icons/up-icon.jpg");
  background-repeat: no-repeat;
  background-position: 50%;
  background-size: cover;
  cursor: pointer;
  position: absolute;
  right: 5px;
  top: 5px;
}

.accordion .description {
  text-align: left;
  padding: 5px 10px;
  border-bottom: 1px solid lightgray;
}

.position-relative {
  position: relative;
}

HTML AccordionJS AccordionTS Accordion

* {
  padding: 0;
  margin: 0;
  box-sizing: border-box;
}

body {
  font-family: sans-serif;
  color: #343a40;
  line-height: 1;
}

.accordion {
  width: 700px;
  margin: 100px auto;
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.item {
  box-shadow: 0 0 30px rgba(0, 0, 0, 0.1);
  padding: 20px 24px;
  padding-right: 48px;
  cursor: pointer;
  border-top: 4px solid #fff;
  border-bottom: 4px solid #fff;

  display: grid;
  grid-template-columns: auto 1fr auto;
  column-gap: 24px;
  row-gap: 32px;
  align-items: center;
}

.number {
  font-size: 24px;
  font-weight: 500;
  color: #ced4da;
}

.title,
.icon {
  font-size: 24px;
  font-weight: 500;
}

.content-box {
  grid-column: 2 / -1;
  padding-bottom: 16px;
  line-height: 1.6;
}

.content-box ul {
  color: #868e96;
  margin-left: 16px;
  margin-top: 16px;

  display: flex;
  flex-direction: column;
  gap: 12px;
}

/* OPEN STATE */
.open {
  border-top: 4px solid #087f5b;
}

.open .number,
.open .title {
  color: #087f5b;
}

React Accordion