@charset "UTF-8";

* {
  margin: 0;
  padding: 0;
}

ul,
li {
  margin: 0;
  padding: 0;
  list-style: none;
}

img {
  width: 100%;
  border: none;
  vertical-align: bottom;
}

button {
  background: none;
  border: none;
  appearance: none;
  outline: none;
  padding: 0;
  cursor: pointer;
}

body {
  color: #ffffff;
}

.header {
  background: #333333;
  display: flex;
  align-items: center;
  height: 80px;
  padding: 10px 20px;
}

.hamburger {
  position: relative;
  margin-left: auto;
  width: 45px;
  height: 35px;
  z-index: 1;
}

.hamburger span {
  position: absolute;
  left: 0;
  background: #ffffff;
  width: inherit;
  height: 5px;
}

.top-line {
  top: 0px;
}

.center-line {
  top: 15px;
}

.bottom-line {
  bottom: 0px;
}

.container {
  width: 500px;
  margin: 50px auto 0;
}

.accordion-btn {
  position: relative;
  width: 100%;
  text-align: left;
  color: #ffffff;
  background: #000000;
  padding: 15px 25px;
  border-bottom: 1px solid #ffffff;
}

.accordion-btn span {
  position: absolute;
  background: #ffffff;
  transition: transform 0.5s, opacity 0.5s;
}

.accordion-line:nth-child(1) {
  top: 50%;
  right: 44px;
  width: 16px;
  height: 4px;
}

.accordion-line:nth-child(2) {
  top: 39%;
  right: 50px;
  width: 4px;
  height: 16px;
}

.accordion-line.active:nth-child(1) {
  opacity: 0;
}

.accordion-line.active:nth-child(2) {
  transform: rotate(90deg);
}

.accordion-list,
.accordion-list-js {
  background: #f7f7f7;
  color: #333333;
}

.accordion-list {
  display: none;
}

.accordion-list-js {
  height: 0;
  opacity: 0;
  visibility: hidden;
  overflow: hidden;
  transition: all 0.5s;
}

.accordion-list-js.open {
  height: 275px;
  opacity: 1;
  visibility: visible;
}

.accordion-item {
  padding: 15px 25px;
  border-bottom: 1px solid #afaeae;
}
